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VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Finite Quantum Gravity and M-Theory
DTSTART;VALUE=DATE-TIME:20130121T140000Z
DTEND;VALUE=DATE-TIME:20130121T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-5953@cern.ch
DESCRIPTION:Description: We hereby present a class of higher derivative
theories that realizes an ultraviolet completion of Einstein gravity. This
class is marked by a non-polynomal entire function (form factor)\, which
averts extra degrees of freedom (including ghosts) and improves the high
energy behaviour of the loop amplitudes. By power counting arguments\, it
is proved that the theory is (super-) renormalizable in any dimension\,
i.e. only one-loop divergences survive. Furthermore\, in odd dimensions
there are no counter terms for pure gravity and the theory turns out to be
``finite". Consequently\, by introducing an infinite tower of massive
states coming from dimensional reduction\, quantum gravity is finite in
even dimension\, as well. Comparing these theories with superstring and
string field theories\, a unique form factor is singled out. In view of
this\, we can modify the 10-dimensional supergravity and finally get a
ultraviolet completion of 11-dimensional supergravity by an ``oxidation
process". The result is a finite ``Quantum M-theory". Some implications of
this proposed class of theories are: asymptotic freedom\, disappearance
of singularities and decreasing of the spectral dimension at short
distances. Some applications are: regular black holes\, Starobinsky
inflation and singularity-free Newtonian cosmology.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=5953
LOCATION:Primo piano Ed. C 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=5953
END:VEVENT
BEGIN:VEVENT
SUMMARY:Time-dependent stabilization in AdS/CFT
DTSTART;VALUE=DATE-TIME:20130123T100000Z
DTEND;VALUE=DATE-TIME:20130123T110000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-5954@cern.ch
DESCRIPTION:Description: Abstract: I'll consider theories with time-
dependent Hamiltonians which alternate between being bounded and unbounded
from below. For appropriate frequencies dynamical stabilization can occur
rendering the effective potential of the system stable. I'll first
consider a free field theory on a torus with a time-dependent mass term.
I'll further consider the gravity dual of a conformal field theory on a
sphere in three spacetime dimensions\, deformed by a doubletrace operator.
The gravity dual of the theory with a constant unbounded potential
develops big crunch singularities. Such singularities can be cured by
dynamical stabilization: for sufficiently high frequencies the theory is
dynamically stabilized and big crunches get screened by black hole
horizons. I'll further discuss the response of AdS black branes to
external time-dependent periodic boundary conditions (dual in the CFT to
time-dependent deformations).\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=5954
LOCATION:First floor\, Building C 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=5954
END:VEVENT
BEGIN:VEVENT
SUMMARY:New appoach to QCD factorization
DTSTART;VALUE=DATE-TIME:20130213T130000Z
DTEND;VALUE=DATE-TIME:20130213T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-5955@cern.ch
DESCRIPTION:Description: Abstract: Factorization is a fundamental concept
suggested in order to apply QCD calculations to description of hadronic
reactions.\nAccording to this concept\, a theoretical study of any
hadronic process should combine perturbative calculations (to calculate
partonic sub-processes) with parton distributions (to proceed from the
partons to hadrons).\nThe partonic sub-processes are calculated with the
use of regular techniques developed in perturbative QCD (either at fixed
orders in the coupling or by using Evolution Equations).\nIn contrast\,
the parton distributions are introduced purely phenomenologically without
any theoretical grounds. There are two kinds of QCD factorizations
available in the literature: i) collinear factorization\, and ii) K_T-
factorization\, introduced independently of each other.\nConsidering the
structure functions of Deep-Inelastic Scattering\, we show that both K_T-
and collinear factorizations can be obtained by consecutive reductions of
a more general factorization which we call "basic factorization".\nAs an
application of our results\, we obtain theoretical restrictions on fits
for the parton distributions. First\, we predict a general form of fits
for parton distributions in K_T-factorization. Second\, we exclude the use
of singular factors x^{-a} (with a > 0) in fits for the initial quark and
gluon distributions in both K_T- and collinear factorizations.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=5955
LOCATION:Building C\, First floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=5955
END:VEVENT
BEGIN:VEVENT
SUMMARY:Universal trimer and tetramer physics
DTSTART;VALUE=DATE-TIME:20130214T140000Z
DTEND;VALUE=DATE-TIME:20130214T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-5957@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=5957
LOCATION:First Floor\, Building C 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=5957
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic thermalization of entanglement entropy
DTSTART;VALUE=DATE-TIME:20130219T130000Z
DTEND;VALUE=DATE-TIME:20130219T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-5956@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory Seminars.\n Abstract:
"Holographic thermalization is studied in a simple model\, in which
energy injection in a strongly coupled field theory is described by a
shell of null dust falling into anti-de Sitter space. The evolution
towards equilibrium is probed using entanglement entropy and related
quantities."\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=5956
LOCATION:Scuola Normale Aula Mancini
URL:https://agenda.infn.it/conferenceDisplay.py?confId=5956
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cosmic R-string in thermal history
DTSTART;VALUE=DATE-TIME:20130306T150000Z
DTEND;VALUE=DATE-TIME:20130306T160000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6035@cern.ch
DESCRIPTION:Description: We study stabilization of an unstable cosmic
string associated with\nspontaneously broken U(1) R-symmetry\, which
otherwise causes a\ndangerous roll-over process. We demonstrate that in a
gauge mediation\nmodel\, messengers can receive enough corrections from
the thermal\nplasma of the supersymmetric standard model particles to
stabilize the\nunstable modes of the string.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6035
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6035
END:VEVENT
BEGIN:VEVENT
SUMMARY:Higgs discovery impact on composite dynamics
DTSTART;VALUE=DATE-TIME:20130313T140000Z
DTEND;VALUE=DATE-TIME:20130313T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-5958@cern.ch
DESCRIPTION:Description: I will discuss the impacts of the LHC findings on
composite dynamics at the electroweak scale. I will show that current
results are compatible with dynamical electroweak symmetry breaking once
the electroweak radiative corrections are taken properly into account. I
will then show some of the most relevant signatures for the LHC helpful to
single out composite dynamics.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=5958
LOCATION:Building C\, Ground Floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=5958
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gauge Mediation of Supersymmetry Breaking in light of the Higgs
boson
DTSTART;VALUE=DATE-TIME:20130423T130000Z
DTEND;VALUE=DATE-TIME:20130423T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6039@cern.ch
DESCRIPTION:Description: I will first review basic aspects of the minimal
supersymmetric extension of the Standard Model (MSSM). I will then
introduce the breaking of supersymmetry and the mechanism to mediate this
breaking to the MSSM from an hidden sector via gauge interactions. I will
discuss the impact of the Higgs discovery on this scenario\, and describe
the present status of gauge mediation of supersymmetry breaking (GMSB). I
will then focus on identifying the region of the parameter space of GMSB
that are still compatible with the experiments and their phenomenological
properties.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=6039
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6039
END:VEVENT
BEGIN:VEVENT
SUMMARY:Matrix Theories and Emergent Space
DTSTART;VALUE=DATE-TIME:20130515T130000Z
DTEND;VALUE=DATE-TIME:20130515T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-5959@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory
Seminars\nAbstract:After a brief general introduction to the concept of
emerging space\, I will explain a general strategy to understand the
emergence of additional dimensions of space in general Matrix Theories
(like gauge theories) and explain how this strategy has been applied
successfully in some string theory set-ups. I will also speculate on some
possible generalizations\, including to non-supersymmetric models.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=5959
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=5959
END:VEVENT
BEGIN:VEVENT
SUMMARY:Giant Monopoles as a Dark Matter Candidate
DTSTART;VALUE=DATE-TIME:20130530T123000Z
DTEND;VALUE=DATE-TIME:20130530T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6311@cern.ch
DESCRIPTION:Description: I will review recent challenges to WIMP dark
matter models and describe how some of them are addressed by giant
monopole models. Several consistency checks of such models will be
described\, including consistency with MACHO bounds\, the bullet cluster
and the CMB power spectrum. The main prediction of such models is that
dwarf galaxies are embedded in halos which extend for tens of kpc\, often
beyond their tidal radius\, which would be impossible for gravitationally
bound particulate dark matter. This may explain the anomalously high
abundance and relative velocities of dwarf galaxy pairs recently observed
by Fattahi\, Navarro\, et al.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6311
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6311
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chiral Transition and Deconfinement in Magnetic QCD
DTSTART;VALUE=DATE-TIME:20130605T130000Z
DTEND;VALUE=DATE-TIME:20130605T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6367@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=6367
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6367
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hadronization\, chemical equilibrium and the QCD phase transition
DTSTART;VALUE=DATE-TIME:20130606T130000Z
DTEND;VALUE=DATE-TIME:20130606T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6166@cern.ch
DESCRIPTION:Description: In this seminar I will address the relation
between hadroproduction\nin relativistic nuclear collisions and the phase
transition between\nhadronic matter and quark-gluon-plasma predicted by
QCD.\nAfter summarizing the main concepts\, I will present recent
results\nwhich indicate that plasma hadronization occurs just at the
\ncritical temperature estimated by QCD lattice computations.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6166
LOCATION:
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6166
END:VEVENT
BEGIN:VEVENT
SUMMARY:Theta dependence of 4D SU(N) gauge theories at finite temperature
DTSTART;VALUE=DATE-TIME:20130613T130000Z
DTEND;VALUE=DATE-TIME:20130613T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6319@cern.ch
DESCRIPTION:Description: The dependence of 4D SU(N) gauge theories on the
topological theta\nterm is investigated at finite temperature\, and in
particular in the\nlarge-N limit. General arguments and numerical
analyses exploiting\nthe lattice formulation show that it drastically
changes across the\ndeconfinement transition. The low-T phase is
characterized by a\nlarge-N scaling with theta/N as relevant variable\,
while in the high-T\nphase the scaling variable is just theta and the free
energy is\nessentially determined by the instanton-gas
approximation.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6319
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6319
END:VEVENT
BEGIN:VEVENT
SUMMARY:Integrability in the Wilsonian/holographic renormalization group
DTSTART;VALUE=DATE-TIME:20130618T120000Z
DTEND;VALUE=DATE-TIME:20130618T130000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6361@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory Group Seminar\n\nThe
Polchinski equations for the Wilsonian renormalization group in the
$D$--dimensional matrix scalar field theory can be written at large $N$ in
a Hamiltonian form. The Hamiltonian defines evolution along one extra
holographic dimension (energy scale) and can be found exactly for the
complete basis of single trace operators. We show that at low energies
independently of the dimensionality $D$ the Hamiltonian system in question
(for the subsector of operators without derivatives) reduces to the {\\it
integrable} effective theory. The obtained Hamiltonian system describes
large wavelength KdV type (Burger--Hopf) equation and is related to the
effective theory obtained by Das and Jevicki for the matrix quantum
mechanics.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=6361
LOCATION:Scuola Normale
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6361
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gauge theory simulation in optical lattices
DTSTART;VALUE=DATE-TIME:20130619T130000Z
DTEND;VALUE=DATE-TIME:20130619T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6306@cern.ch
DESCRIPTION:Description: After introducing the idea and the purposes of a
Quantum Simulator\, I will first (shortly) review\nthe interest in and the
way \nhow to generate artificial external gauge field\, e.g. a constant
magnetic field\, with cold atoms\,\nmentioning the novel theoretical
proposals and experimental achievements.\nThis introductory part is ment
to give an idea to which are the models that can be ``easily''
achieved\nwith ultracold atoms\, especially once loaded in optical
lattice.\nThen\, I will point out which kind of ``demanding'' interaction
terms are needed in order to make the gauge field dynamical and impose
the\ngauge invariance. I will introduce special lattice gauge theories
known as gauge magnets\,\nwhich are different but related \nKogut-
Susskind Hamiltonian formulation of usual Wilson's Lagrangian approach.
\nI will explain while gauge magnets are better suited for a quantum
simulator\nand present our proposal to realize it using Rydberg gates.\nIn
particular\, I will show how the string tension between static charges
can be measured in such simulator both for Abelian (U(1) and non-Abelian
(SU(2)) gauge group.\nFinally\, I will comment on the work(s) in progress
towards a better understanding of gauge magnets' phase space. \n\n(Based
on L. Tagliacozzo\, A. Celi\, P. Orland\, M. Lewenstein\, “Simulations
of non-\nAbelian gauge theories with optical lattices\,”
[arXiv:1211.2704]\, to appear in Nature Communication\, \nand L.
Tagliacozzo\, A. Celi\, A. Zamora\, M. Lewenstein\, “Optical Abelian
Lattice\nGauge Theories\,” Ann. Phys. 330 160 (2013)
[arXiv:1205.0496].)\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6306
LOCATION:First Floor\, Building C 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6306
END:VEVENT
BEGIN:VEVENT
SUMMARY:It's a colorful world
DTSTART;VALUE=DATE-TIME:20130625T130000Z
DTEND;VALUE=DATE-TIME:20130625T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6368@cern.ch
DESCRIPTION:Description: The number of quark color charges in QCD is three
- which can hardly be considered as a "large" number. However\, it has
been known since the 1970's that generalizations of QCD\, in which the
number of colors N is taken to be infinite\, are characterized by
interesting properties\, and offer a neat qualitative explanation for
several phenomena observed in the hadronic world. In addition\, they also
hint at a possible duality between gauge and string theories. During the
1990's\, this idea was formulated in a more precise way through the
holographic correspondence\, which suggests that strongly coupled large-N
gauge theories can be described by the classical gravity limit of string
models defined in a curved\, higher-dimensional spacetime. In this talk\,
after a concise introduction to these topics\, I will present a review of
recent lattice studies of gauge theories with more than three colors\, and
discuss the relevance of the large-N limit for real-world QCD.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6368
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6368
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hydrodynamics from Black hole physics
DTSTART;VALUE=DATE-TIME:20130711T130000Z
DTEND;VALUE=DATE-TIME:20130711T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6587@cern.ch
DESCRIPTION:Description: We shall first motivate why string theory becomes
an essential tool to understand different properties of a hydrodynamic
system. Then we talk about different holographic techniques which help us
to calculate various transport coefficients of a fluid system using the
properties of black hole physics. We also discuss about current status of
the subject. The discussion will be very basic\, mainly for non-string
audience.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=6587
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6587
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hydrodynamics from Equilibrium Partition Function
DTSTART;VALUE=DATE-TIME:20130712T090000Z
DTEND;VALUE=DATE-TIME:20130712T100000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6588@cern.ch
DESCRIPTION:Description: I shall start with a naive review on Fluid
Dynamics. Next I shall talk about the fluid equilibrium \npartition
function and describe how it can be used to constraint the dynamics of
fluids. I shall also present the recent results obtained using this
technique .\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=6588
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6588
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stabilizing matter and gauge fields localized on walls
DTSTART;VALUE=DATE-TIME:20130904T130000Z
DTEND;VALUE=DATE-TIME:20130904T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6340@cern.ch
DESCRIPTION:Description: In the brane-world scenario\, it has been a long-
standing problem to\nlocalize gauge fields on the brane in the field
theory method.\nBoth non-Abelian gauge fields and minimally interacting
massless matter\nfields are localized on a domain wall in the five-
dimensional spacetime.\nField-dependent gauge coupling naturally gives a
position-dependent\ncoupling to localize non-Abelian gauge fields on the
domain wall.\nAn economical field content allows us to eliminate a moduli
for a\ninstability\, and to demonstrate the positivity of the position-
dependent\ncoupling in the entire moduli space.\nEffective Lagrangian
similar to the chiral Lagrangian is found.\nSome of the localized gauge
fields aquire masses as walls separate\,\nsimilarly to D-branes. Hence it
gives a field theory model for D-branes.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6340
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6340
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hydrodynamics of quantum critical points
DTSTART;VALUE=DATE-TIME:20130924T130000Z
DTEND;VALUE=DATE-TIME:20130924T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6446@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory Group
Seminar\n\nAbstract: A phase transition at zero temperature may occur as
the ground state of a many-body system is changed by tuning an external
parameter. The boundary between the two phases is a quantum critical
point\, characterized by a scaling symmetry. Quantum critical behaviour
appears in a variety of condensed matter systems such as graphene\, cold
atoms and strange metals and also in some strongly coupled gauge theories
at finite density. At non-zero temperature it is expected that the system
is described by hydrodynamics. I discuss how the symmetries at the
critical point constrain the hydrodynamic description and what new effects
may be present relative to theories with conformal invariance
(relativistic or non-relativistic).\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6446
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6446
END:VEVENT
BEGIN:VEVENT
SUMMARY:Coulomb branches of 3d N=4 gauge theories: monopole operators and
Hilbert series
DTSTART;VALUE=DATE-TIME:20131001T130000Z
DTEND;VALUE=DATE-TIME:20131001T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6431@cern.ch
DESCRIPTION:Description: Coulomb branches of three-dimensional N=4
supersymmetric gauge theories are notoriously difficult to study\, as they
are not protected against quantum corrections. I will present a novel
simple formula for the Hilbert series (the generating function of the
chiral ring) of the Coulomb branch of the infrared superconformal fixed
point\, which applies to any good or ugly 3d N = 4 gauge theory. The
formula counts monopole operators which are dressed by classical
operators\, the Casimir invariants of the residual gauge group that is
left unbroken by the magnetic ﬂux. This is a new tool with several
promising applications ranging from tests of 3d mirror symmetry\, ADE
instanton moduli spaces\, the M-theory uplift of orientifold planes and
the study of Gaiotto theories.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6431
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6431
END:VEVENT
BEGIN:VEVENT
SUMMARY:Topological parameters in gravity
DTSTART;VALUE=DATE-TIME:20131004T093000Z
DTEND;VALUE=DATE-TIME:20131004T103000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6870@cern.ch
DESCRIPTION:Description: Gravity theory in four dimensions has three
independent topological parameters. In the Lagrangian\, these show up as
coefficients of three topological densities\, namely Nieh-Yan\, Pontryagin
and Euler. We analyse the Hamiltonian theory based on this generalized
Lagrangian. The resulting theory develops a nontrivial dependence on all
three parameters\, and is shown to admit a SU(2) gauge theoretic
interpretation with a set of seven first class constraints corresponding
to three SU (2) rotations\, three spatial diffeomorphism and one to
evolution in a timelike direction.\nWe also study how the topological
parameters affect the gravity action with or without a cosmological
constant for manifolds with boundaries. For both Dirichlet and locally AdS
asymptotia\, the Barbero-Immirzi parameter is shown to appear as the only
independent topological coupling constantin the action principle.\nOur
analyses indicate that there might be nontrivial implications of the
topological parameters in the quantum theory of gravity.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6870
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6870
END:VEVENT
BEGIN:VEVENT
SUMMARY:Three-nucleon forces in the 1/Nc expansion
DTSTART;VALUE=DATE-TIME:20131010T130000Z
DTEND;VALUE=DATE-TIME:20131010T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6864@cern.ch
DESCRIPTION:Description: A complete classification of all the spin-flavor
structures that\ncancontribute to three-nucleon forces is presented and
their power\ncounting in 1/Nc is discussed. Including all independent
momentum\nstructures\, a complete basis of operators for the three-
nucleon\nforce is given explicitlyi up to next-to-leading order inthe 1/Nc
\nexpansion. It is also shown that the expansion is in a power
series\nin 1/Nc^2.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6864
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6864
END:VEVENT
BEGIN:VEVENT
SUMMARY:Integrability and Wilson Loop in ABJM theory
DTSTART;VALUE=DATE-TIME:20131017T130000Z
DTEND;VALUE=DATE-TIME:20131017T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6817@cern.ch
DESCRIPTION:Description: In the last years the study of the conjecture
AdS/CFT\, example of duality between a string theory and a supersymmetric
gauge theory\, opens the possibility to extend the world of integra-
bility for interacting theories to D greater than 2. In particular Super-
Yang-Mills N=4 (SYM) in 4-D and Super-Chern-Simons N=6 (ABJM) in 3-D seem
to be integrable in the planar limit. While in the four dimensional case
we have almost a complete knowledge of the spectrum\, in ABJM the
expression\, at all order of the coupling constant\, of an important
interpolating func- tion h(λ) is still missing. This function appears in
the magnon dispersion relation and it is fundamental to calculate the
anomalous dimension of the operators of the theory. I show a possible
pattern to calculate h(λ) using the expectation value of Wilson Loops
with tools as perturbative quantum field theory\, localization and
thermodynamic Bethe Ansatz (TBA).\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6817
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6817
END:VEVENT
BEGIN:VEVENT
SUMMARY:Higgs compositeness: current status (and future strategies)
DTSTART;VALUE=DATE-TIME:20131024T130000Z
DTEND;VALUE=DATE-TIME:20131024T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6669@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory Group
Seminars\nAccording to the Standard Model paradigm\, the newly discovered
Higgs boson is predicted to be elementary\,and would thus be the first
fundamental scalar field ever observed. But Nature might repeat herself\,
and the Higgs boson could be instead a bound state of new strongly-coupled
dynamics at the TeV scale. The problem of stabilizing the electroweak
scale would thus be solved dynamically\, similarly to the QCD scale. In
this seminar I will review the status of composite Higgs theories\, how
they compare with current experimental results and what are the most
promising strategies to test them at present and future colliders.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6669
LOCATION:Scuola Normale Aula Bianchi
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6669
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum quenches\, linear response and superfluidity out of
equilibrium
DTSTART;VALUE=DATE-TIME:20131029T140000Z
DTEND;VALUE=DATE-TIME:20131029T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6957@cern.ch
DESCRIPTION:Description: Triggered by the impressive progress in the
experimental study of ultracold atomic gases\, where both the initial
state and the Hamiltonian dynamics can be engineered with unprecedented
accuracy\, last years have witnessed a burst in the theoretical
understanding of the equilibration of closed systems. While so far the
behavior of the expectation value of observables in the stationary state
has been mainly addressed\, we know that the response to external (static
or dynamic) perturbations can be equally important to characterize the
properties of a quantum system. \nWe propose a characterization of
stationary states at long times after a sudden quench in terms of time
averaged response functions\, and use these ideas to describe non-thermal
steady states attained by low dimensional superfluids. \nIn particular\,
we analyze the sensitivity\, quantified by the helicity modulus and the
stiffness\, of the long-time stationary state of a many-body quantum
system to an infinitesimal twist at the boundary conditions. We apply our
theory to two paradigmatic examples of hard-core bosons in a one-
dimensional ring\, quenched to/from superfluid/insulating phases. We show
that the out-of-equilibrium stiffness is qualitatively different from the
equilibrium case.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6957
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6957
END:VEVENT
BEGIN:VEVENT
SUMMARY:My Life with Non-Renormalizable Theories
DTSTART;VALUE=DATE-TIME:20131107T140000Z
DTEND;VALUE=DATE-TIME:20131107T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6996@cern.ch
DESCRIPTION:Description: In Quantum Field Theory the event of non-
renormalizability appears frequently. Examples: non-linear sigma model\,
general relativity\, field redefinition\, massive Yang-Mills. I have done
some work in few cases. In this seminar I present the general idea\, the
techniques\, the price and the results. The non-linear sigma model will be
the guide and the example. I conclude by giving a survey of the results
obtained and of the problems encountered for other more complex
theories.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=6996
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6996
END:VEVENT
BEGIN:VEVENT
SUMMARY:Guido Cossu\, " Polyakov Loops and the Hosotani mechanism"
DTSTART;VALUE=DATE-TIME:20131111T140000Z
DTEND;VALUE=DATE-TIME:20131111T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7031@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=7031
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7031
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entanglement in Quantum Field Theory
DTSTART;VALUE=DATE-TIME:20131112T140000Z
DTEND;VALUE=DATE-TIME:20131112T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6743@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory Groups
Seminars\n\nEntanglement is a characteristic property of quantum systems.
In a relativistic quantum field theory\, even the vacuum state is
entangled\, although not so much as a typical state. Quantifying the
amount of entanglement between different regions of space gives fresh
insight into the nature of quantum field theories\, and of the many-body
condensed matter systems whose long-distance physics they capture. In
this talk I show how various measures of entanglement can be computed
using the Feynman path integral approach\, and describe various analytic
results that have been obtained both in two\, and higher numbers of space-
time dimensions.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6743
LOCATION:UniPi\, Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6743
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tuscan Meeting on Theoretical Physics (joint INFN/SNS/UniFi/UniPi
activity)
DTSTART;VALUE=DATE-TIME:20131119T100000Z
DTEND;VALUE=DATE-TIME:20131119T153000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6767@cern.ch
DESCRIPTION:Description: Ore 11:00 - Marc Henneaux (ULB Brussels)\nTitle:
Gravitational electric-magnetic duality \nAbstract: Various aspects of
gravitational electric-magnetic duality will be reviewed\, including the
manifestly duality invariant formulation of the linearized theory in 4
dimensions involving prepotentials\, and its extension to higher
dimensions where "twisted seld-duality" is the relevant concept. It will
be argued that duality symmetry supercedes spacetime symmetry.\nOre 14:00
- Gianguido Dall'Agata (Padova U. and INFN\, Padova)\nTitle: New maximal
supergravities and their origin \nAbstract: We recently discovered
infinite families of maximal supergravity theories\, vastly extending the
landscape of 4-dimensional models. In this talk we describe these models
and many of their interesting and unexpected features: the interconnected
moduli space\, the existence of de Sitter vacua satisfying slow-roll
conditions and of new supersymmetry breaking patterns. We conclude by
discussing their stringy origin.\nOre 15:30 - Kostas Skenderis
(Southampton U.)\nTitle: Towards holography for asymptotically flat
spacetimes \nAbstract: In this talk I will present a correspondence
between asymptotically AdS spacetimes and a class of Ricci-flat
spacetimes. I will then use this correspondence to initiate the discussion
of holography for asymptotically flat spacetimes.Logistic Info: how to
reach\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=6767
LOCATION:Scuola Normale Superiore Sala Azzurra
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6767
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Quantum Quench in the sinh-Gordon model
DTSTART;VALUE=DATE-TIME:20131121T133000Z
DTEND;VALUE=DATE-TIME:20131121T143000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7033@cern.ch
DESCRIPTION:Description: We study a quantum quench of the interaction in
the sinh-Gordon model starting from a large initial mass and zero initial
coupling. Our focus is on the determination of the expansion of the
initial state in terms of post-quench excitations. We argue that the large
energy profile of the involved excitations can be relevant for the late
time behavior of the system and common regularization schemes are
unreliable. We therefore proceed in determining the initial state by first
principles expanding it in a systematic and controllable fashion on the
basis of the asymptotic states. Our results show that\, for the special
limit of pre-quench parameters that we consider\, it assumes a so-called
squeezed vacuum form that has been shown to evolve so as to exhibit the
equilibrium behavior predicted by the Generalized Gibbs Ensemble.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7033
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7033
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic Methods for Strongly Coupled Systems
DTSTART;VALUE=DATE-TIME:20131126T140000Z
DTEND;VALUE=DATE-TIME:20131126T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7035@cern.ch
DESCRIPTION:Description: The holographic correspondence is a map between
quantum field theories and higher dimensional theories of gravity. With
historical roots in the seventies\, when remarkable discoveries about
black hole entropy and large N gauge theories were made\, it found its
first concrete realization in the late nineties\, in the context of string
theory. A relevant aspect of the correspondence is that it works as a
duality: it maps non-perturbative regimes on one side into perturbative
regimes in the other. This offers\, in principle\, the opportunity to shed
new light on the physics of quantum systems which evade standard
descriptions based on weakly interacting quasi-particles\, by means of
simple classical gravity methods. Despite the fact that the models we can
precisely access with these methods are still quite far from realistic
quantum field theories\, there are relevant cases in which this limitation
appears to be less severe. In those cases\, holography has provided novel
effective descriptions and a set of unique benchmark results for
phenomenologically relevant systems. Concrete applications to the quark-
gluon plasma phase of QCD\, the strange metal phase of quantum critical
systems in condensed matter and entanglement physics\, will be
discussed.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7035
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7035
END:VEVENT
BEGIN:VEVENT
SUMMARY:Antonio Davide Polosa "Low Energy Nuclear Reactions?"
DTSTART;VALUE=DATE-TIME:20131205T140000Z
DTEND;VALUE=DATE-TIME:20131205T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6938@cern.ch
DESCRIPTION:Description: After an introduction to the controversial problem
of Low Energy Nuclear Reactions (LENR) catalyzed by neutrons on metallic
hydride surfaces we present the results of an experiment\, made in
collaboration with ENEA Labs in Frascati\, to search neutrons from plasma
discharges in electrolytic cells.\nWe also discuss the problems met with
the Widom-Larsen-Srivastava theory\, considered by some authors as the
main motivation to continue the experimental and technological research on
LENR.\nThe negative outcome of our experiment and the fragile theoretical
framework go in the direction of ruling out the possibility of LENR to
occur in condensed matter systems under specific conditions.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6938
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6938
END:VEVENT
BEGIN:VEVENT
SUMMARY:Superfluidity of ultra cold atomic gases
DTSTART;VALUE=DATE-TIME:20131212T140000Z
DTEND;VALUE=DATE-TIME:20131212T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6994@cern.ch
DESCRIPTION:Description: INFN and UniPi Colloquium.\n\n\nIn the talk I will
review some of the most recent theoretical and experimental advances in
the study of superfluid phenomena in ultracold atomic gases. These include
the dynamic behavior of superfluid gases confined in harmonic traps\,
the quenching of the moment of inertia\, the structure of quantized
vortices\, the propagation of second sound at finite temperature and the
determination of the superfluid density\, the new effects caused by spin-
orbit coupling\, like the emergence of a double gapless band in the
stripe phase. Results for both Bose and Fermi superfluids will be
presented.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=6994
LOCATION:Building C\, Ground Floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6994
END:VEVENT
BEGIN:VEVENT
SUMMARY:Inhomogeneous chiral-symmetry breaking
DTSTART;VALUE=DATE-TIME:20131213T100000Z
DTEND;VALUE=DATE-TIME:20131213T110000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-6993@cern.ch
DESCRIPTION:Description: Most studies of the QCD phase diagram tacitly
assume that the different phases are homogeneous in space. However\, there
are good arguments that inhomogeneous phases could also be present. In
this talk I focus on inhomogeneous chiral-symmetry breaking phases\, where
the quark condensate varies in space. Model calculations suggest that the
first-order chiral phase transition\, including the critical endpoint\,
could be removed from the phase diagram when inhomogeneous phases are
included. More recently similar results have also been obtained from
Dyson-Schwinger studies of QCD.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=6993
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=6993
END:VEVENT
BEGIN:VEVENT
SUMMARY:Out of equilibrium integrable systems: Overlaps and Quench Action
logic.
DTSTART;VALUE=DATE-TIME:20131218T140000Z
DTEND;VALUE=DATE-TIME:20131218T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7012@cern.ch
DESCRIPTION:Description: In this talk we review the recent thermodynamical
approach to problems in non equilibrium quantum integrable systems. This
method\, which we denote as "quench action logic" requires a "smoothened"
version of the overlaps between the eigenstates of the system and the
initial state and presents some similarities and some discordances with
the most celebrated tool to compute long time dynamics for integrable
systems\, the Generalized Gibbs Ensemble. We show how this is related to
quenches which change macroscopically the state of the system in contrast
with quenches which allow the system to explore only a finite range of the
Hilbert space. In particular we will focus on the interaction quench in
the Lieb-Liniger model with some connections to other interaction quenches
in the XXZ spin chain.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7012
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7012
END:VEVENT
BEGIN:VEVENT
SUMMARY:Towards a model-independent comparison of dark matter direct
detection data
DTSTART;VALUE=DATE-TIME:20140109T140000Z
DTEND;VALUE=DATE-TIME:20140109T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7103@cern.ch
DESCRIPTION:Description: In order to favor the comparison of the different
dark matter search data\, the experimental collaborations typically
translate their results into bounds or allowed regions within a specific
dark matter model: namely\, they assume the Standard Halo Model for the
dark matter halo\, and spin-independent interactions of the dark matter
with nucleons. However\, there are no reasons for this model to be the one
realized in nature. In the first part of this talk we will propose a
simple method to translate bounds from one interaction model to another\,
thus going beyond the usual assumption of spin-independent interactions.
In the second part we will introduce a halo-independent way to compare
data from different direct detection experiments\, that allows to avoid
the large uncertainties introduced by the unknown astrophysics of the dark
matter halo.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7103
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7103
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ghost Free and Singularity Free theory of Gravity
DTSTART;VALUE=DATE-TIME:20140115T140000Z
DTEND;VALUE=DATE-TIME:20140115T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7337@cern.ch
DESCRIPTION:Description: I will discuss how to ameliorate the UV aspect of
Einstein's Gravity. I will propose a non-local infinite theory of
Gravity\, which is Ghost Free and Devoid of Cosmological and mini-Black
hole type singularity. I will discuss some classical and quantum aspects
of this theory of gravity.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7337
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7337
END:VEVENT
BEGIN:VEVENT
SUMMARY: Tin Sulejmanpasic\, "Instanton-monopoles and confinement"
DTSTART;VALUE=DATE-TIME:20140116T140000Z
DTEND;VALUE=DATE-TIME:20140116T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7030@cern.ch
DESCRIPTION:Description: I will discuss instanton-monopoles\, constituents
of instantons with magnetic monopole character\, and their connection to
confinement in QCD-like theories. They have shown themselves to be
responsible for confinement in several QCD like theories such as deformed
Yang-Mills theory\, Super-Yang Mills theory\, Super QCD and QCD(adj)\,
i.e. QCD with adjoint flavor fermions. I will give a pedagogical overview
of their importance in calculable regimes and also discuss the relevance
of these objects to pure Yang-Mills and problems which are involved in
calculations there.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7030
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7030
END:VEVENT
BEGIN:VEVENT
SUMMARY:Claudio Bonati\, "The magnetic properties of strongly interacting
matter"
DTSTART;VALUE=DATE-TIME:20140121T140000Z
DTEND;VALUE=DATE-TIME:20140121T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7108@cern.ch
DESCRIPTION:Description: In the recent years much attention has been
devoted to the study of Quantum Chromodynamics in external magnetic field
for its possible phenomenological relevance. In this talk we will review
the motivations for such an interest and the main results obtained by
first principles lattice methods\, with particular emphasis on the
determination of the magnetic susceptibility of the strongly interacting
matter. It will be shown how some technical complications can be bypassed
and we will present the physical results obtained\, together with a
discussion of its possible phenomenological relevance.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7108
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7108
END:VEVENT
BEGIN:VEVENT
SUMMARY:Conformal Field Theory\, old and new
DTSTART;VALUE=DATE-TIME:20140128T130000Z
DTEND;VALUE=DATE-TIME:20140128T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7014@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory Group
Seminars.\n\nConformal field theories are both interesting and important.
Recently there has been a renewed interest in these theories in four
dimensions. After reviewing some old results about conformal field
theories\, I will turn to new developments such as the a-theorem and the
relation between conformal and scale invariance.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7014
LOCATION:Scuola Normale Superiore Aula Bianchi
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7014
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Star Formation History and Initial Mass Function in the
Galactic Bulge from HST
DTSTART;VALUE=DATE-TIME:20140129T140000Z
DTEND;VALUE=DATE-TIME:20140129T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7354@cern.ch
DESCRIPTION:Description: I will present the latest results from the Hubble
Galactic Bulge\nTreasury Program. The program has targeted 4 different
low-extinction\nwindows in the Galactic Bulge\, down to 0.4 solar masses.
Imaging was performed in 5 bands\, from UV to near-IR\, providing
excellent coverage of the\nstellar spectral energy distributions and hence
allowing the derivation\nof stellar masses\, metallicities\, ages\, and
extinctions. A second epoch\nin the I-band enables proper-motion cleaning
of foreground stars from\nthe bulge catalogs. To best exploit this unique
dataset\, I have developed\nan advanced hierarchical Bayesian technique
that uses the information\nfor individual stars to infer the properties of
the whole population.\nI will show the preliminary results on the initial
mass function and\nstar-formation history in these 4 bulge fields.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7354
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7354
END:VEVENT
BEGIN:VEVENT
SUMMARY:Critical behaviour of ultra-cold bosonic gases in a confining
potential.
DTSTART;VALUE=DATE-TIME:20140130T140000Z
DTEND;VALUE=DATE-TIME:20140130T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7238@cern.ch
DESCRIPTION:Description: Experiments with ultra-cold atoms use a confining
potential to keep the sample trapped in place. However\, the presence of
the trap is most often neglected in the modelling and analyses\, in favour
of treatments based on homogeneous descriptions\, such as the local
density approximation. The trap qualitatively modifies the critical
behaviour of these systems near a phase transition: most notably\, it
bounds the correlation length to remain finite. The trap-size scaling can
provide a sound treatment of the effects of the confining potential\, much
in the same way as finite-size scaling can account for corrections to the
critical behaviour of finite systems. In this seminar\, I shall review
some general aspects of finite-size and trap-size scaling. I shall then
concentrate on its applications to the Bose-Hubbard model\, which
realistically describe a bosonic gas in an optical lattice. Finally\, I
shall show that an effective control parameter is needed for a correct
trap-size scaling treatment of some particular points of the phase
boundary of this model.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7238
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7238
END:VEVENT
BEGIN:VEVENT
SUMMARY:Parafermionic modes in topological systems
DTSTART;VALUE=DATE-TIME:20140206T140000Z
DTEND;VALUE=DATE-TIME:20140206T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7356@cern.ch
DESCRIPTION:Description: Recent works show that\, in particular topological
systems\, it may be possible to fractionalize Majorana zero modes to
obtain more exotic anyons called parafermions.\nIn this talk I will first
review some aspects of the Majorana zero modes appearing in topological
superconductors\, then I will describe how parafermionic zero modes arise
at the interface between a superconductor and a ferromagnet along the edge
of a fractional topological insulator (FTI) and I will examine their
properties.\nFinally I will address the physics of two-dimensional arrays
of interacting parafermionic modes. The geometry of the underlying
topological insulators is strictly related to the topological
characteristics of these systems. In a geometry where the length of the
FTI edges is independent on the system size\, the array has a
topologically ordered phase\, giving rise to a qudit toric code
Hamiltonian in perturbation theory. In a geometry where the length of the
edges scales instead with system size\, an exact duality maps the system
to an Abelian lattice gauge theory without topological order.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7356
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7356
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d and 5d gauge theory partition functions as deformed CFT
correlators
DTSTART;VALUE=DATE-TIME:20140211T140000Z
DTEND;VALUE=DATE-TIME:20140211T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7450@cern.ch
DESCRIPTION:Description: In recent years\, due to the method of
supersymmetric localization\, many exact results have been achieved in the
study of supersymmetric gauge theories on compact spaces of various
dimension and topology\, leading to the discovery of surprising
structures. An important example is provided by the correspondence
introduced by Alday\, Gaiotto and Tachikawa\, relating the partition
functions of a large class of supersymmetric gauge theories on S4 and S2
to correlators in Liouville CFT. In this talk\, I will explain how this
picture can be lifted to higher dimensional gauge theories via the
correspondence of partition functions on S5\, S4xS1\, S3 and S2xS1 to
correlators in theories whose underlying symmetry is given by a quantum
deformation of the Virasoro algebra. In particular\, I will discuss how
3-point functions can be derived by the bootstrap approach and used to
define this novel class of deformed CFTs. I will also discuss some aspects
related to integrable structures in these models\, such as reflection
coefficients\, as well as possible generalization to other 3d and 5d
geometries.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7450
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7450
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum quench from a thermal tensor state: boundary effects and
generalized Gibbs ensemble
DTSTART;VALUE=DATE-TIME:20140218T140000Z
DTEND;VALUE=DATE-TIME:20140218T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7369@cern.ch
DESCRIPTION:Description: \n In this talk I will consider a quantum
quench in a non-interacting fermionic one-dimensional field-theory. The
system of size L is initially prepared into two halves\, each of them
thermalized at two different temperatures. At a given time the two halves
are joined together by a local coupling and the whole system is left to
evolve unitarily. For an infinitely extended system\, I will show that the
time evolution of the particle and energy densities is well described via
a hydrodynamic approach which allows us to evaluate the correspondent
stationary currents. In such a case\, the two-point correlation functions
are deduced\, at large times\, from a simple non-equilibrium steady state.
Otherwise\, whenever the boundary conditions are retained (in a properly
defined thermodynamic limit)\, any current is suppressed at large times\,
and the stationary state is described by a generalized Gibbs ensemble\,
which is diagonal and depends only on the post-quench mode
occupation.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7369
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7369
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tuscan Meeting on Theoretical Physics (joint INFN/SNS/UniFi/UniPi
activity)
DTSTART;VALUE=DATE-TIME:20140225T100000Z
DTEND;VALUE=DATE-TIME:20140225T153000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7193@cern.ch
DESCRIPTION:Description: 11:00 - Erik Verlinde (Amsterdam)\nTitle: String
Theory and the Entropic Origin of Gravity\, Dark Energy and Dark
Matter.\nAbstract: Recent developments indicate that quantum entanglement
and its associated entropy play a central role in explaining the
connectivity of space time and the origin of gravity. In string theory a
concrete mechanism for the quantum entanglement of space time is provided
by the so-called long string phenomenon. In a cosmological setting these
entangled long strings form a dynamical system whose energy can be
identified with the dark energy. Using an accurate analogy with
entanglement network of polymers\, we calculate the effects due to slow
relaxation processes and find excellent quantitative agreement with the
phenomena attributed to dark matter in galaxies\, clusters of galaxies\,
and the cosmos.\n12:00 Lunch break\n14:00 - Leonardo Rastelli (Stony
Brook)\nTitle: The Superconformal Bootstrap Program\nAbstract: I will
outline the modern bootstrap program for four-dimensional theories with
extended superconformal symmetry. The bootstrap equations neatly split
into two classes. There are ``minibootstrap'' equations for supersymmetric
quantities\, which can be solved analytically\, and full- fledged
bootstrap equations for non-protected quantities\, which can be studied
numerically. The entire program relies on general symmetry principles\,
with no need for ``fields'' or Lagrangians.\n15:00 Coffee break\n15:30 -
Jerome Gauntlett (Imperial College\, London)\nTitle: Holographic Q
LatticesLogistic Info: how to reach\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7193
LOCATION:
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7193
END:VEVENT
BEGIN:VEVENT
SUMMARY:Models with interactions that decay weakly with distance
DTSTART;VALUE=DATE-TIME:20140304T140000Z
DTEND;VALUE=DATE-TIME:20140304T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7192@cern.ch
DESCRIPTION:Description: Systems with long-range interactions\, like
gravitational\, charged and \ndipolar systems\, can be made extensive\,
but are intrinsically non additive.\nThe violation of this basic property
of thermodynamics is the origin of \nensemble inequivalence\, which in
turn implies that specific heat can be \nnegative in the microcanonical
ensemble\, temperature jumps may appear at\nmicrocanonical first order
phase transitions\, ergodicity is tipically\nbroken. From the dynamical
point of view\, these systems can be trapped in long-lived\nquasi-
stationary states whose lifetime diverges with system size. \nRealizing
that such features are present for a wide class \nof models has renewed
the interest in long-range interactions.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7192
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7192
END:VEVENT
BEGIN:VEVENT
SUMMARY: Universal Behavior of Shannon and Renyi mutual information of
quantum spin chains
DTSTART;VALUE=DATE-TIME:20140311T140000Z
DTEND;VALUE=DATE-TIME:20140311T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7605@cern.ch
DESCRIPTION:Description: In this talk we will first review the Shannon and
Renyi entropies as information theoretic concepts and their use in quantum
and classical systems. They are quantities which usually base dependent.
Then we will introduce mutual Shannon and mutual Renyi entropies as very
useful quantities to detect the universality classes of the quantum spin
chains. We will present some conjectures regarding the connection of these
quantities to central charge of the critical systems and then we will
support them with numerical works done on the Ising model Q=3\,4 Potts
model\, XXZ spin chains. In all of these cases we will emphasize on the
bases that one chooses to calculate these quantities and in particular we
will show that some of the bases are actually more suitable to detect the
universality classes.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7605
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7605
END:VEVENT
BEGIN:VEVENT
SUMMARY:Edwin Laermann\, "Results from high temperature lattice QCD"
DTSTART;VALUE=DATE-TIME:20140313T140000Z
DTEND;VALUE=DATE-TIME:20140313T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7740@cern.ch
DESCRIPTION:Description: The talk concentrates on two topics addressed by
numerical simulations of lattice QCD. In the first part fluctuations and
correlations of conserved quantum numbers as baryon number\, strangeness
and electrical charge are studied in the vicinity of the chiral crossover
temperature of QCD. These quantities can be useful to analyze the freeze-
out of hadrons in heavy ion collisions and to learn more about the
carriers of those quantum numbers.\nIn a second part the restoration of
chiral symmetries at high temperature is investigated by means of hadron
correlations and eigenvalues of the Dirac matrix.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7740
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7740
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fabio Maltoni\, "AAA Phenomenology at the LHC"
DTSTART;VALUE=DATE-TIME:20140318T140000Z
DTEND;VALUE=DATE-TIME:20140318T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7406@cern.ch
DESCRIPTION:Description: The first three years of running of LHC have
brought us a wealth of information : from the discovery of a scalar boson
that resembles the Higgs of the SM to the exclusion of many "easy-to-
discover" BSM scenarios. The quest for new physics at the LHC has now
moved to a new phase where accurate predictions for both signals and
backgrounds are mandatory. I illustrate how recent progress in the field
of accurate MC simulations has not only changed the way predictions are
obtained but also how experimentalists and theorists work together.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7406
LOCATION: 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7406
END:VEVENT
BEGIN:VEVENT
SUMMARY:High density QCD on a Lefschetz thimble? A new approach to the sign
problem in QFTs.
DTSTART;VALUE=DATE-TIME:20140326T140000Z
DTEND;VALUE=DATE-TIME:20140326T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7677@cern.ch
DESCRIPTION:Description: In this talk I illustrate the approach that we
recently proposed to perform Monte Carlo simulations of lattice quantum
field theories (QFTs) with a sign problem. The approach consists in
formulating the theory on a "Lefschetz thimble" (that I will intoduce).
The new formulation does not coincide exactly with any of the usual ones\,
but I argue\, relying on universality\, that it is also a legitimate
regularization. I then describe the algorithm that we are using to smple
the configurations on the thimble. The implementation of the algorithm
resuires a mapping of the original QFT into a system with one additional
dimension. This poses some challenges\, but it has favourable expected
scaling properties. Finally\, I show the results of our first numerical
tests on small lattices for a simple but nontrivial QFT. These are very
encouraging in view the wide applicability - in principle - of our
approach.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7677
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7677
END:VEVENT
BEGIN:VEVENT
SUMMARY:Physics of the 1D long range Ising model in a transverse field
DTSTART;VALUE=DATE-TIME:20140327T140000Z
DTEND;VALUE=DATE-TIME:20140327T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7649@cern.ch
DESCRIPTION:Description: Long range interacting systems can show different
behaviour from their short range version.\nRecently experiments with
trapped ions have started to investigate them. I will charaterize the
ground state and low energy excitations of the long range Ising model in a
transverse field\, the simplest interacting long range model in 1D. In
particular I will focus on the complexity\nof the ground state wave
function in terms of entanglement measure and more traditional spin
correlations. I will also present some results about the violation of
causality when the long range interactions decay slowly enough with the
distance. I will also briefly review the\nexperiments with trapped ions
that have confirmed our predictions.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7649
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7649
END:VEVENT
BEGIN:VEVENT
SUMMARY:The phenomenological holographic approach to QCD
DTSTART;VALUE=DATE-TIME:20140401T120000Z
DTEND;VALUE=DATE-TIME:20140401T130000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7525@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory Group Seminar. In the
framework of the AdS/CFT correspondence\, a phenomenological approach can
be used to construct gravity dual theories that reproduce many of the
features for four-dimensional Yang-Mills theory and QCD. The simplest
model for the pure glue sector consist in Einstein gravity plus a single
scalar field in five dimensions. Within an appropriate class of scalar
field potentials these models reproduce many qualitative features of
strongly coupled large-N Yang-Mills theory and one can adjust the
parameters so that the accord with lattice results is very good at the
quantitative level. I will describe how spectra\, thermodynamic quantities
and various transport coefficients are computed in the gravity dual
language\, and I will briefly discuss extensions to include flavor
dynamics.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7525
LOCATION:Building C\, Ground Floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7525
END:VEVENT
BEGIN:VEVENT
SUMMARY:Implications of the Lorentz signature of spacetime: from clock
synchronization to relativistic entanglement
DTSTART;VALUE=DATE-TIME:20140410T130000Z
DTEND;VALUE=DATE-TIME:20140410T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7765@cern.ch
DESCRIPTION:Description: The Lorentz signature of the spacetimes of special
and general relativity is a source of problems absent in non-relativistic
theories. The absence of timelike excitations in relative times in
spectroscopy and the need of a sound formulation of the Cauchy problem in
field theory require a metrological convention about the instantaneous
3-spaces\, namely a clock synchronization convention. This can be done in
a Wigner covariant way with a 3+1 splitting of spacetime\, the use of
radar 4-coordinates centered on a timelike observer and the separation of
the non-local (non-measurable) relativistic center of mass of the
3-universe\, both in special relativistic inertial frames and in (either
special or general) relativistic non-inertial ones of globally hyperbolic
spacetimes. Only relative variables are measurable: there is a basic
spatial non-separability already at the classical level. In relativistic
quantum mechanics it is an obstruction to the identification of subsystems
and leads to a theory of relativistic entanglement strongly different
from the non-relativistic one\, in which Alice and Bob cannot be decoupled
observers. In field theory the separation of the relativistic center of
mass may help in avoiding Haag theorem\, but leads to extra problems for
the definition of particles besides the known ones in non-inertial frames
and in curved spacetimes. In general relativity and cosmology the trace of
the extrinsic curvature (the York time) of the non-Euclidean 3-spaces is
a gauge variable to be fixed with a metrological convention: the dark side
(or at least part of it) of the universe may be a relativistic inertial
effect.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7765
LOCATION:BUilding C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7765
END:VEVENT
BEGIN:VEVENT
SUMMARY:Handling perturbative quantum field theory to all orders: the
Adler-Bardeen theorem
DTSTART;VALUE=DATE-TIME:20140415T120000Z
DTEND;VALUE=DATE-TIME:20140415T130000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7663@cern.ch
DESCRIPTION:Description: After a general introduction to explain the
motivations of this research\, I reconsider the Adler-Bardeen theorem and
give a proof that is more general than the ones known so far. Among other
things\, it identifies the subtraction scheme where gauge anomalies
manifestly cancel to all orders\, if they vanish at one loop. Differently
from most other proofs\, it does not make use of renormalization-group
techniques\, therefore it applies to all perturbatively unitary\, power
counting renormalizable quantum field theories\, including conformal and
finite theories.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7663
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7663
END:VEVENT
BEGIN:VEVENT
SUMMARY:Driven Heisenberg spin chain with arbitrary boundary twisting
angle: Exact results
DTSTART;VALUE=DATE-TIME:20140428T130000Z
DTEND;VALUE=DATE-TIME:20140428T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7606@cern.ch
DESCRIPTION:Description: We consider an open Heisenberg quantum spin
chain\, coupled at the ends to boundary\nreservoirs polarized in different
directions\, which sets up a twisting gradient across the chain. \nWe
demonstrate that the exact nonequilibrium steady state of the chain driven
by boundary Lindblad operators can be constructed explicitly with a
matrix product ansatz where the matrices satisfy the quantum algebra
Uq[SU(2)]. Using this matrix product ansatz in the isotropic case\, we
calculate explicitly the magnetization profiles and magnetization
currents.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7606
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7606
END:VEVENT
BEGIN:VEVENT
SUMMARY:Towards a general fluid/gravity correspondence and the membrane
paradigm
DTSTART;VALUE=DATE-TIME:20140507T120000Z
DTEND;VALUE=DATE-TIME:20140507T130000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7563@cern.ch
DESCRIPTION:Description: In this talk I will describe in the context of
gauge/gravity duality how to construct (d+2)-dimensional metrics
holographycally dual to the hydrodynamic regime of putative dual fluids
living on a (d+1)-dimensional timelike hypersurface foliating the bulk
spacetime. I will then illustrate the discussion with the example of a
cutoff fluid in asymptotically Anti de Sitter black holes whose
thermodynamic and near equilibrium properties interpolate between those of
a conformal fluid on the boundary and a Rindler fluid near the horizon\,
the latter substantially different from the fluid associated to the
horizon in the earlier notion of the membrane paradigm. I will then
finally discuss how the membrane paradigm is incomplete into capturing
many physical aspects of black holes. Throughout the talk I will try to be
pedagogical starting from scratch by illustrating the concepts of the
holographic principle and the explicit realization of it through the so
called AdS/CFT correspondence.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7563
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7563
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-Supersymmetric Brane Configurations\, Seiberg Duality and
Dynamical Symmetry Breaking
DTSTART;VALUE=DATE-TIME:20140512T130000Z
DTEND;VALUE=DATE-TIME:20140512T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7834@cern.ch
DESCRIPTION:Description: In this talk I will consider brane configurations
that include NS5 branes\, orientifold\n planes and anti-branes. I will
argue that the class of field theories that live on\nsuch brane
configurations admit Seiberg duality. Interactions between branes and
orientifold planes will be given a field theory interpretation. In
particular a certain repulsive interaction will lead to a non-trivial
Coleman-Weinberg potential and dynamical symmetry breaking.\n I will also
discuss the case of type 0' strings and chiral symmetry breaking of the
form\n SU(Nf)xSU(Nf)-->SU(Nf) in a QCD-like theory.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7834
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7834
END:VEVENT
BEGIN:VEVENT
SUMMARY:Approximate NNNLO Higgs cross section from analiticity and
resummations
DTSTART;VALUE=DATE-TIME:20140513T130000Z
DTEND;VALUE=DATE-TIME:20140513T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7645@cern.ch
DESCRIPTION:Description: We construct an approximate expression for the
cross section for Higgs\nproduction in gluon fusion at next-to-next-to-
next-to-leading order in\n$\\alpha_s$ ($\\alpha_s^3$ relative to leading
order) with finite top\nmass. We argue that an accurate approximation can
be constructed by\nexploiting the analiticity of the cross section in the
space of the\ncomplex variable $N$\, Mellin conjugate to $m_H^2/s$\, and
the\ninformation on its singularity structure coming from large $N$
(soft\ngluon\, Sudakov) and small $N$ (high energy\, BFKL) all
order\nresummation. We find that the approximate N$^3$LO result amounts
to a\ncorrection of $17\\%$ to the NNLO QCD cross section for production
of a\n125~GeV Higgs at the LHC (8~TeV)\, larger than previously
estimated\,\nand it significantly reduces the scale dependence of the NNLO
result.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7645
LOCATION:Building C\, Ground Floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7645
END:VEVENT
BEGIN:VEVENT
SUMMARY:Skyrmions\, baryons and domain walls
DTSTART;VALUE=DATE-TIME:20140516T130000Z
DTEND;VALUE=DATE-TIME:20140516T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7936@cern.ch
DESCRIPTION:Description: We will review a low-energy effective theory of
mesons and baryons introduced by Skyrme\, in which the baryon is a
soliton. Stability requires a higher-derivative term of fourth order (or
higher) in order for the soliton to have finite energy and a finite size.
A problem with the original model with a fourth-order term is that the
binding energy is too big and even though a BPS bound exists\, no soliton
solution saturating the bound does. Recently a model with sixth-order
terms has been studied in the literature which possesses a BPS bound that
can be saturated and hence near-BPS solutions can have parametrically
small binding energies which fits experimental data better. We will study
such a model in various limits and finally we will discuss Skyrmions in
various different dimensions related to one another by domain walls.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7936
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7936
END:VEVENT
BEGIN:VEVENT
SUMMARY:An asymptotic solution of large-N QCD\, and of large-N n=1 SUSY QCD
DTSTART;VALUE=DATE-TIME:20140520T120000Z
DTEND;VALUE=DATE-TIME:20140520T130000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7614@cern.ch
DESCRIPTION:Description: We find an asymptotic solution in the ultraviolet
for lower-spin two-\, three- and multi-point correlators and S-matrix
amplitudes in large-N QCD (and in n=1 SUSY QCD) in terms of glueball and
meson propagators (and their SUSY partners)\, as opposed to the
perturbative description in terms of gluons and quarks. Many physics
consequences follow.\nIn particular\, we show that all the glueball
propagators based presently on any version of the AdS-String/Gauge Theory
Correspondence disagree by power of logarithms with the correct result
implied by asymptotic freedom. Instead\, the glueball propagator computed
in a recently-proposed Topological Field Theory underlying large-N QCD
agrees.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=7614
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7614
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-equilibrium thermal transport in integrable spin chains
DTSTART;VALUE=DATE-TIME:20140526T120000Z
DTEND;VALUE=DATE-TIME:20140526T130000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8072@cern.ch
DESCRIPTION:Description: I will consider the problem of a one-dimensional
quantum system\ncoupled to two different thermal baths at its ends.\nFirst
I will focus on the example of the Ising spin chain\, characterizing\nthe
stationary state\, the energy flow and the statistics of
its\nfluctuations. I will present and discuss preliminary results for
the\nthermal current in the XXZ antiferromagnetic chain at the end of the
talk.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=8072
LOCATION:Building C\, first floor 163
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8072
END:VEVENT
BEGIN:VEVENT
SUMMARY:QCD properties in medium in the soft-wall model of AdS/QCD
DTSTART;VALUE=DATE-TIME:20140605T123000Z
DTEND;VALUE=DATE-TIME:20140605T133000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7892@cern.ch
DESCRIPTION:Description: In 2006 Son et al. proposed a new phenomenological
approach to model the theory of strong interactions\, based on the
AdS/CFT correspondence conjectured by Maldacena some years before. By
exploiting some features of the correspondence\, they developed a
framework in which QCD-like features can be studied through a dual
semiclassical perturbative model.\nOne of the most interesting and
promising applications is towards modeling finite temperature and density
physics. Indeed\, AdS/QCD is able to describe regions of the phase diagram
of QCD-like models barely accessible by other methods. I will show how to
compute quantities in this framework\, namely meson spectral functions\,
thermodynamic functions\, and condensates.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7892
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7892
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michele Pepe "A new approach to thermal quantum field theories"
DTSTART;VALUE=DATE-TIME:20140610T130000Z
DTEND;VALUE=DATE-TIME:20140610T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-7909@cern.ch
DESCRIPTION:Description: I present results for the thermodynamics of SU(3)
Yang-Mills theory. This study relies on a new approach to investigate
thermal quantum field theories based on considering the quantum system in
a moving reference frame. This framework provides us with much more
efficient observables to measure the thermodynamic features of a quantum
theory by numerical simulations on the lattice. I show the results of an
accurate study of the equation of state and preliminary results about the
renormalization of the energy-momentum tensor.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=7909
LOCATION:Building C\, 1st floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=7909
END:VEVENT
BEGIN:VEVENT
SUMMARY:Early Universe physics after Planck and Bicep2
DTSTART;VALUE=DATE-TIME:20140619T130000Z
DTEND;VALUE=DATE-TIME:20140619T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8058@cern.ch
DESCRIPTION:Description: Physics Department Colloquium \nBicep2 has
recently reported the detection of degree-scale B-mode polarization in the
Cosmic Microwave Background\,interpreting it as evidence for the
gravitational wave background generated during inflation in the early
Universe. These results\, which have to be analysed in combination with
the results of the ESA Planck satellite mission as well as other
cosmological observations\, shed light on the physical processes occurring
in the very early Universe\, i.e. at energy scales around 10^16
GeV.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=8058
LOCATION:Building C\, groud floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8058
END:VEVENT
BEGIN:VEVENT
SUMMARY:Instanton Bags\, High Density Holographic QCD and Chiral Symmetry
Restoration
DTSTART;VALUE=DATE-TIME:20140626T130000Z
DTEND;VALUE=DATE-TIME:20140626T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8237@cern.ch
DESCRIPTION:Description: We describe the simplest example of an instanton
bag in Euclidean space. It consists of a monopole wall and a Kaluza-Klein
monopole wall\, lifted to one higher dimension\, trapping the instanton
charge in the middle. This object has finite instanton density in a
three-dimensional volume. \nBaryon physics in holographic QCD models gets
translated into a multi-instanton problem in the bulk\, and a state with a
high density baryonic charge consists of a non-diluted multi-instanton
solution. The instanton bag is a good candidate for this high-density
state. We compute its parameters via moduli stabilization. Chiral
symmetry restoration is exhibited by this state\, and it is a direct
consequence of its non-diluted features.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8237
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8237
END:VEVENT
BEGIN:VEVENT
SUMMARY:Effective Field Theory for Fluids
DTSTART;VALUE=DATE-TIME:20140702T120000Z
DTEND;VALUE=DATE-TIME:20140702T130000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8378@cern.ch
DESCRIPTION:Description: Joint INFN/SNS/UniPi Theory Group Seminar\n\nIn
this talk I will present the low-energy effective field theory that
describes the infrared dynamics of non-dissipative fluids. In
particular\, I will use the techniques of non-linear realizations
developed by Callan\, Coleman\, Wess and Zumino\, and Volkov to construct
the effective theory based on the symmetry-breaking pattern of the fluid.
I will discuss how this formalism can be used to incorporate quantum
anomalies into the effective field theory.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8378
LOCATION:Scuola Normale Superiore Aula Bianchi
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8378
END:VEVENT
BEGIN:VEVENT
SUMMARY:Super-renormalizable & Finite Gravitational Theories
DTSTART;VALUE=DATE-TIME:20140709T130000Z
DTEND;VALUE=DATE-TIME:20140709T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8325@cern.ch
DESCRIPTION:Description: We advance a class of unitary higher derivative
theories of gravity that realize an ultraviolet completion of Einstein
general relativity in any dimension. This range of theories is marked by
an entire function\, which averts extra degrees of freedom (including
poltergeists) and improves the high energy behaviour of the loop
amplitudes. It is proved that only one-loop divergences survive and the
theory is super-renormalizable regardless of the spacetime dimension.
Furthermore\, in odd dimensions there are no counter terms for pure
gravity and the theory turns out to be ``finite". Moreover\, using the
Pauli-Villars regularization procedure introduced by Diaz-Troost-van
Nieuwenhuizen-van Proeyen and applied to Einstein's gravity by Anselmi\,
we are able to remove also the one loop divergences.\nRecently we obtained
the most general gravitational action introducing a local potential of
the Riemann tensor and we explicitly showed in D=4 that all the one-loop
beta functions can be make to vanish. The outcome is a finite quantum
gravity even at one-loop. The result can be easily extended in extra
dimensions and likely the higher dimensional theory will be finite too. In
these days we were able to properly defined the theory even for the class
of form factors exponentially growing at high energy.\nComparing these
theories with string field theories\, a unique form factor is singled out.
In view of this\, we can modify the 10-dimensional supergravity
(including the massive states) and finally get a ultraviolet completion of
11-dimensional supergravity by an ``oxidation process". The result is a
proposal for a "finite M-theory in field theory".\nAdditionally\, we
propose a maximal extension of the theory which admits one single extra
degree of freedom (gravi-scalar). This generalization turns out to be a
unitary and super-renormalizable (or finite) completion of the Starobinsky
theory. Currently we are working on gravity coupled to matter: a
preliminary power counting analysis is presented.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8325
LOCATION:Building C\, first floor 241
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8325
END:VEVENT
BEGIN:VEVENT
SUMMARY:Agostino Patella\, "Space-time symmetries and Yang-Mills gradient
flow"
DTSTART;VALUE=DATE-TIME:20140918T130000Z
DTEND;VALUE=DATE-TIME:20140918T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8273@cern.ch
DESCRIPTION:Description: The Yang-Mills gradient flow is a useful tool to
investigate gauge theories\, which has interesting properties under
renormalization. The gradient flow provides a systematic way to define
non-local composite operators that are UV finite. In the first part of my
talk I will introduce the gradient flow\, and I will present its main
features.The latest developments have shown how to use the gradient flow
to explore symmetries and to define the corresponding Noether currents\,
even when the symmetry is broken by the regularization. In particular
infinitesimal translations can be investigated on the lattice. In the
second part of my talk I will present a set of possible strategies based
on the gradient flow to renormalize the energy-momentum tensor
nonperturbatively.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8273
LOCATION: 248\, Bldg. C\, first floor
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8273
END:VEVENT
BEGIN:VEVENT
SUMMARY: Fast Radio Bursts\, Planck Stars and Quantum Gravity.
DTSTART;VALUE=DATE-TIME:20140930T090000Z
DTEND;VALUE=DATE-TIME:20140930T100000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8590@cern.ch
DESCRIPTION:Description: Fast Radio Bursts are strong millisecond signals
observed by the Arecibo and Parkes Radio telescopes. They have likely
extragalactic origin and their source is unknown. Their wavelength is not
far from the wavelength predicted by quantum gravity for the explosion of
a primordial black hole via tunnelling to a white hole.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8590
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8590
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tuscan Meeting on Theoretical Physics (joint INFN/SNS/UniFi/UniPi
activity)
DTSTART;VALUE=DATE-TIME:20141014T090000Z
DTEND;VALUE=DATE-TIME:20141014T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8339@cern.ch
DESCRIPTION:Description: 11:00 - Jan de Boer (Amsterdam)\nTitle: Probing
the interior of AdS .\nAbstract: It has been\, and still is a bit of a
puzzle how the interior of AdS is encoded in the dual gauge theory. This
issue has attracted renewed interest because of the claim that black hole
horizons may contain firewalls. In this talk some approaches to
reconstruct the interior from the boundary will be reviewed\, with
emphasis on an approach based on a new quantity called differential
entropy.\n12:00 Lunch break\n14:00 - Ferdinando Gliozzi
(Torino)\nTitle: A shortcut to Conformal Bootstrap\nAbstract: The
modern numerical implementation of the conformal bootstrap
mechanism applies only to CFTs saturating unitarity bounds. I describe an
alternative approach which works for a much larger class of theories and
is much more economical computationally\, though the obtained results are
not yet as precise as in the usual method.\n15:00 Coffee break\n15:30 -
Carlos Nunez (Swansea)\nTitle: Aspects of Gauge-Strings
duality\nAbstract: I will discuss recent developments in the duality
between gauge fields and strings.Logistic info: how to reach\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8339
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8339
END:VEVENT
BEGIN:VEVENT
SUMMARY:Masayasu Hasegawa\, "Instantons\, Monopoles\, and Chiral symmetry
breaking"
DTSTART;VALUE=DATE-TIME:20141016T130000Z
DTEND;VALUE=DATE-TIME:20141016T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8485@cern.ch
DESCRIPTION:Description: Monopoles play a crucial role in the confinement
mechanism through monopole condensation and dual superconductivity.
Whereas instantons offer a beautiful mechanism for spontaneous breaking of
chiral symmetry\, a direct relation to confinement is not obvious.\nThe
purpose of our present study is to show the relations between instantons\,
monopoles and chiral symmetry breaking by using the overlap fermions as
an analytical tool.\nThe exact relations remained unclear in spite of many
studies. Therefore we try to clarify the relations with the help of
overlap fermions on the lattice.\nIn this seminar\, I will present some
new results clarifying the relations between instantons\, monopoles\, and
chiral symmetry breaking.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8485
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8485
END:VEVENT
BEGIN:VEVENT
SUMMARY:Minimal defect production vs Kibble-Zurek mechanism
DTSTART;VALUE=DATE-TIME:20141023T130000Z
DTEND;VALUE=DATE-TIME:20141023T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8479@cern.ch
DESCRIPTION:Description: When a quantum system is dragged through a
critical point it cannot follow adiabatically the external drive\, no
matter how slow it is. As a result a finite density of defects will be
left over in the final state. The loss of adiabaticity in quantum critical
systems and the resulting scaling laws for the defect production is known
as the Kibble-Zurek mechanism. In some relevant \ncases it is nonetheless
necessary to minimise the defect production. I will discuss under which
circumstances this can be achieved\, what is the minimal defect density\,
I will show specific cases where this can be studied explicitly.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8479
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8479
END:VEVENT
BEGIN:VEVENT
SUMMARY:Highlights of Holography with massive gravitons
DTSTART;VALUE=DATE-TIME:20141030T140000Z
DTEND;VALUE=DATE-TIME:20141030T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8383@cern.ch
DESCRIPTION:Description: On the stage of strongly coupled systems in
condensed matter\, holography\nis nowadays playing a very interesting
part. Indeed it furnishes a\nwell-defined framework were strongly coupled
toy-models amenable to\nexplicit quantitative computations are available.
Universal behaviors\,\nsuch as linear in T resistivity of strange metals
or Plankian diffusivity\nbounds at criticality\, can be directly addressed
and even provide useful\nsuggestions to direct experimental
investigations. I'll discuss some\nexciting insight gained from
holographic models featuring momentum\ndissipation induced by an explicit
mass term for the gravitons in the dual\ngravity model\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8383
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8383
END:VEVENT
BEGIN:VEVENT
SUMMARY:Precision gravity measurements with cold atoms interferometry
DTSTART;VALUE=DATE-TIME:20141104T140000Z
DTEND;VALUE=DATE-TIME:20141104T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8430@cern.ch
DESCRIPTION:Description: I will describe experiments we are conducting for
precision tests of gravitational physics using cold atom interferometry.
In particular\, I will report on the measurement of the gravitational
constant G with a Rb Raman interferometer [1]\, and on experiments based
on Bloch oscillations of Sr atoms confined in an optical lattice for
gravity measurements at small spatial scales [2] and for testing Einstein
equivalence principle [3]. Future prospects for experiments in space will
be also discussed [4].\n\n[1] G. Rosi\, F. Sorrentino\, L. Cacciapuoti\,
M. Prevedelli\, G. M. Tino\, Precision Measurement of the Newtonian
Gravitational Constant Using Cold Atoms\, Nature 510\, 518 (2014).\n[2] F.
Sorrentino\, A. Alberti\, G. Ferrari\, V. V. Ivanov\, N. Poli\, M.
Schioppo\, G. M. Tino\, Quantum sensor for atom-surface interactions below
10 μm\, Phys. Rev. A 79\, 013409 (2009).\n[3] M.G. Tarallo\, T.
Mazzoni\, N. Poli\, D.V. Sutyrin\, X. Zhang\, G. M. Tino\, Test of
Einstein Equivalence Principle for 0-Spin and Half-Integer-Spin Atoms:
Search for Spin-Gravity Coupling Effects\, Phys. Rev. Lett. 113\, 023005
(2014).\n[4] G. M. Tino et al.\, Precision Gravity Tests with Atom
Interferometry in Space\, Nuclear Physics B (Proc. Suppl.) 243–244\, 203
(2013).\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=8430
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8430
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mixed isospin 4N reactions
DTSTART;VALUE=DATE-TIME:20141105T140000Z
DTEND;VALUE=DATE-TIME:20141105T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8788@cern.ch
DESCRIPTION:Description: I will present recent developments in 4N
scattering research by addressing mixed isospin T=0 and 1 reactions
initiated by p+3H\, n+3He or d+d collisions.\nIn the energy regime where
two\, three- and four-cluster channels are open these processes resemble
a typical nuclear reaction where elastic\, charge exchange\, transfer\,
and breakup scattering take place simultaneously. The results are obtained
using the momentum-space transition operator framework. Recent advances
in three-body nuclear reactions involving composite nuclei will be
discussed as well.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8788
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8788
END:VEVENT
BEGIN:VEVENT
SUMMARY:New N=2 dualities
DTSTART;VALUE=DATE-TIME:20141113T140000Z
DTEND;VALUE=DATE-TIME:20141113T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8737@cern.ch
DESCRIPTION:Description: Gauge theories with N=2 supersymmetry in four
dimensions usually admit several different descriptions. In many cases\,
these dualities can be conveniently studied using the six-dimensional
setup proposed by Gaiotto in 2009\, which allows us to understand them in
terms of simple geometric data. After reviewing this formalism\, I will
discuss a special class of N=2 gauge theories: although these models have
a six-dimensional origin\, their dualities cannot be understood in terms
of the above mentioned framework.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8737
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8737
END:VEVENT
BEGIN:VEVENT
SUMMARY:Duals of Lattice QCD: a review
DTSTART;VALUE=DATE-TIME:20141203T140000Z
DTEND;VALUE=DATE-TIME:20141203T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8937@cern.ch
DESCRIPTION:Description: Several approaches to dual representation of non-
abelian lattice gauge theories are presented. In particular\,
representations based on 1) direct integration over gauge fields and 2) on
the plaquette formulation are considered in details. As an application\,
I discuss the perturbation theory\, large N_c expansion and QCD at non-
zero baryon density.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8937
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8937
END:VEVENT
BEGIN:VEVENT
SUMMARY:Theoretical models for nuclear astrophysics
DTSTART;VALUE=DATE-TIME:20141210T133000Z
DTEND;VALUE=DATE-TIME:20141210T143000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8973@cern.ch
DESCRIPTION:Description: Energy production and nucleosynthesis in stars
arise from nuclear reactions. For light elements\, these reactions are
essentially radiative capture and transfer. In most astrophysical
scenarios\, a large number of cross sections\, involving protons\,
neutrons and alpha particles\, are needed. However\, as stellar energies
are much lower than the Coulomb barrier\, the cross sections for reactions
between charged particles are in general too low to be directly measured
in the laboratory. In addition\, many important reactions involve short-
live nuclei\, which are difficult to investigate experimentally.
Consequently\, theoretical models are often used\, either to extrapolate
experimental cross sections down to stellar energies\, or to evaluate
cross sections when no data exist.\nWe essentially report on two
approaches: (a) microscopic cluster models\, based on a nucleon-nucleon
interaction\, and on the assumption of a cluster structure for the
nucleus\; (b) the R-matrix method\, where resonance properties are fitted
on experimental data (capture cross sections\, elastic phase shifts\,
etc.)\, and then used to predict the cross section at stellar energies.
Recent examples will be presented. We also report on recent efforts to
develop cross-section databases\, and to provide the astrophysics
community with reliable reaction rates.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8973
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8973
END:VEVENT
BEGIN:VEVENT
SUMMARY:Supersymmetric Wilson loops and the Bremsstrahlung function in
ABJ(M) theories
DTSTART;VALUE=DATE-TIME:20150115T140000Z
DTEND;VALUE=DATE-TIME:20150115T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8938@cern.ch
DESCRIPTION:Description: We study the vacuum expectation value of a
generalized class of bosonic\nand fermionic BPS Wilson loops in ABJM
theory. Exploiting the relation\nbetween BPS Wilson loops\, cusp anomalous
dimension and Bremsstrahlung\nfunction we conjecture an exact expression
for the latter in the 1/2-BPS\ncase. Using results from localization\, we
show that in the weak-coupling\nlimit our proposal agrees with the
perturbative result\, while at strong\ncoupling it matches the leading
term of the string prediction.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8938
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8938
END:VEVENT
BEGIN:VEVENT
SUMMARY:Temporal quantum correlations and hidden variable models
DTSTART;VALUE=DATE-TIME:20150120T140000Z
DTEND;VALUE=DATE-TIME:20150120T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9067@cern.ch
DESCRIPTION:Description: The probabilistic structure arising in quantum
mechanics has been recognized to be of a rather different kind with
respect to its classical counterpart and such differences have been shown
to be useful to improve the efficiency of several information processing
tasks.\nWe review the main approach to the characterization of the set of
classical probabilities\, known as the correlation polytope approach\, for
different scenarios\, namely\, hidden variable models discussed by Bell
(local)\, Kochen and Specker (noncontextual)\, and Leggett and Garg
(macrorealist).\nWe discuss the computational difficulties associated with
the method and how to overcome them in several nontrivial cases.\nFor the
quantum case\, we provide a general method to analyze quantum
correlations in the sequential measurement scenario\, which allows us to
compute the maximal correlations. Such a method has a direct application
for computation of maximal quantum violations of Leggett-Garg inequalities
and it is relevant in the analysis of noncontextuality tests.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9067
LOCATION:
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9067
END:VEVENT
BEGIN:VEVENT
SUMMARY:Energy and structure of dilute hard-and soft-sphere gases
DTSTART;VALUE=DATE-TIME:20150127T100000Z
DTEND;VALUE=DATE-TIME:20150127T110000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9164@cern.ch
DESCRIPTION:Description: The energy and structure of dilute hard-and soft-
sphere gases is studied in the framework of several many-body
approaches\, for Bose and Fermi statistics. The effects of correlations on
the distribution function\, momentum distribution and excitation spectrum
are discussed as a function of the gas parameter. In the case Fermi
case\, we also investigate the existence of a ferromagnetic transition
showing that our microscopic calculation shifts the transition to high
densities.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=9164
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9164
END:VEVENT
BEGIN:VEVENT
SUMMARY:Philippe de Forcrand\, "Progress in the simulation of QCD at non-
zero baryon density"
DTSTART;VALUE=DATE-TIME:20150129T140000Z
DTEND;VALUE=DATE-TIME:20150129T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9066@cern.ch
DESCRIPTION:Description: The study of Quantum Chromodynamics on the lattice
is well established at zero baryon density. In the presence of a chemical
potential which induces a non-zero baryon density\, a "sign problem"
appears: the fermion determinant becomes complex and cannot be interpreted
as a measure for Monte Carlo sampling. I review recent progress towards
overcoming this problem\, focusing on a logical approach based on dual
variables.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=9066
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9066
END:VEVENT
BEGIN:VEVENT
SUMMARY:AdS/CFT and non-Fermi liquids
DTSTART;VALUE=DATE-TIME:20150205T140000Z
DTEND;VALUE=DATE-TIME:20150205T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-8653@cern.ch
DESCRIPTION:Description: In this talk I will review the recent efforts to
understand some aspects of strongly correlated fermionic systems using the
AdS/CFT correspondence. The motivation is partly phenomenological\,
coming from the desire to have models capable of describing the behavior
of systems like the high-temperature cuprate superconductors\, and partly
purely theoretical\, namely understanding what phases of matter at finite
density are possible. Particular emphasis will be given to the deviations
from Fermi liquid behavior exhibited by several holographic
constructions.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=8653
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=8653
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bethe Ansatz and Coordinate Bethe Ansatz\, application to three
state Hamiltonians
DTSTART;VALUE=DATE-TIME:20150219T140000Z
DTEND;VALUE=DATE-TIME:20150219T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9184@cern.ch
DESCRIPTION:Description: Quantum integrable systems have a long history.
Originally\, solving\nsuch models was done through the Coordinate Bethe
Ansatz\, while the\nunderlying mathematical structure was not manifest. In
the eighties\,\nthe R-matrices\, solutions of the celebrated Yang-Baxter
equation\, has\nbecome a cornerstone of the resolution of such systems.
R-matrices\ncontain the Hamiltonian of the system and constitute the
basic\ningredient of the Algebraic Bethe Ansatz that provides the
eigenvalues\nand eigenfunctions of the model. After presenting and
comparing the\ntwo ansatz\, we review some of the strategies that can be
implemented\nto infer an R-matrix from the knowledge of its Hamiltonian\,
and apply\nthis framework to the case of three-state Hamiltonians with
rank 1\nsymmetry and nearest-neighbour interactions in the context of
spin\nchains.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9184
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9184
END:VEVENT
BEGIN:VEVENT
SUMMARY:The local renormalization group equation in superspace
DTSTART;VALUE=DATE-TIME:20150225T100000Z
DTEND;VALUE=DATE-TIME:20150225T110000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9292@cern.ch
DESCRIPTION:Description: I'll present the superspace formulation of the
local RG equation\, \na framework for the study of supersymmetric RG flows
in which the constraints of holomorphy and R-symmetry are manifest. I'll
discuss the derivation of the consistency conditions associated with
super-Weyl symmetry off-criticality\n and the study of their implications.
As examples\, I'll derive an expression for the a-function\, and I'll
present an analog of the a-maximization equation\, which is valid off-
criticality. I'll discuss the application of this machinery to the study
of conformal manifolds and I'll give a simple proof that the metric on
such manifolds is Kahler.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9292
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9292
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tuscan Meeting on Theoretical Physics (Joint INFN-SNS-UniFi-UniPi
activity)
DTSTART;VALUE=DATE-TIME:20150227T100000Z
DTEND;VALUE=DATE-TIME:20150227T170000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9056@cern.ch
DESCRIPTION:Description: 11:00 - Thomas Hertog (K.U.
Leuven)\nTitle: Towards a Quantum Theory of Lemaitre’s Primeval
Atom.\nAbstract: A central goal of quantum cosmology is to elucidate the
physical conditions at the beginning\, what Georges Lemaitre called the
`primeval atom’ in 1931\, in order to explain how the distinctive
features of our universe emerged from the early quantum gravitational
phase and why they are what they are. I sketch the overarching framework
behind quantum cosmology\, including recent developments aimed at making
more explicit its predictions for our observations. I also discuss some of
the outstanding challenges such as the important program to firmly root
quantum cosmology in fundamental high-energy physics.\n12:00 Lunch
break\n14:00 - Guido Festuccia (Niels Bohr Institute\,
Copenhagen)\nTitle: Twisted Holomorphic Theories and Supersymmetric
partition functions.\nAbstract: I will consider supersymmetric field
theories on compact manifolds M and obtain constraints on the dependence
of their partition functions Z_M on the geometry of M. For N=1 theories
with a U(1) R symmetry in four dimensions\, M must be a complex manifold
with a Hermitian metric. I will show how describe the theory in terms of
twisted variables that make easy to analyze the dependence of Z_M on the
geometry of M and the parameters entering the Lagrangian. \n15:00 Coffee
break\n15:30 - Stephan Stieberger (Max Planck\, Munich)\nTitle: New
relations between gauge and gravity amplitudes in field and string theory.
\nAbstract: We exhibit new relations
between gauge and gravity amplitudes in field and string theory. First\,
we establish a relation between open and closed string amplitudes
communicated by some projection. As a consequence of the latter the
alpha'-expansion of any closed string amplitude is dictated by that of the
corresponding open string amplitude. Second\, we show that the mixed
gravitational/gauge amplitudes describing decays of gravitons or dilatons
into a number of gauge bosons\, can be written at the tree-level as linear
combinations of pure gauge amplitudes in which the graviton (or dilaton)
is replaced by a pair of collinear gauge bosons. We express N–graviton
amplitudes in Einstein’s gravity as collinear limits of certain linear
combinations of pure Yang-Mills amplitudes in which each graviton is
represented by two gauge bosons\, each of them carrying exactly one half
of graviton’s momentum and helicity. Our results point into a deeper
connection between gauge and gravity amplitudes than what is implied by
the Kawai-Lewellen-Tye relations.Logistic info: how to reach\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9056
LOCATION:Scuola Normale Superiore
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9056
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-relativistic Nambu-Goldstone modes: the cases of vortices and
solitons
DTSTART;VALUE=DATE-TIME:20150306T140000Z
DTEND;VALUE=DATE-TIME:20150306T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9353@cern.ch
DESCRIPTION:Description: In non-reliativistic systems such as condensed
matter systems\, two kinds of gapless Nambu-Goldstone (NG) modes can
appear when a continuous symmetry is spontaneously broken\; type-I NG
modes with linear dispersion relation and type-II NG modes with quadratic
dispersion relation. The counting rule has been recently derived for
internal symmetry breaking by Watanabe and Murayama and Hidaka
independently\, but the general rule is not yet known for space-time
symmetry breaking. Here\, I discuss NG modes for space-time symmetry
breaking in the presence of quantized vortices in superfluids\, a domain
wall in anisotropic ferromagnets\, a skyrmion line in isotropic
ferromagnets\, and a domain wall in two-component Bose-Einstein
condensates (BECs). They all have gapless modes associated with
translational symmetry breaking in addition to gapless modes associated
with internal symmetry and/or scale symmetry breaking. When zero modes
are non-normalizable such as a vortex or domain wall in superfluids (or
BECs)\, dispersion relations become non-integer. I also discuss quantum
effects on NG modes\, with an example of non-Abelian NG modes localized
in a non-Abelian vortex core in multi-component BECs.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9353
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9353
END:VEVENT
BEGIN:VEVENT
SUMMARY:Speakable and unspeakable about gravitational waves
DTSTART;VALUE=DATE-TIME:20150312T140000Z
DTEND;VALUE=DATE-TIME:20150312T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9249@cern.ch
DESCRIPTION:Description: Gravitational waves are not a peculiarity of
General Relativity (GR). They also arise in an Effective Vector theory of
Gravitation (GEV)\, corresponding to the weak field limit of GR\, which
predicts in a parameter free way the gravitational quadrupole radiated
power. An additional indirect proof of their presence is given in this
approach by linear inertial forces\, which can be indeed accounted for by
gravitational radiation in the accelerated non inertial system. However
due to transversality\, their interaction with matter predicted by GEV is
much smaller than that asserted by GR\, thus questioning the possibility
of their detection.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9249
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9249
END:VEVENT
BEGIN:VEVENT
SUMMARY:Solutions of the Bethe-Salpeter equation in Minkowski space
DTSTART;VALUE=DATE-TIME:20150326T133000Z
DTEND;VALUE=DATE-TIME:20150326T143000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9449@cern.ch
DESCRIPTION:Description: The solutions of the Bethe-Salpeter equation in
Minkoswki space are mandatory for computing some interesting physical
quantities like elastic and transition form factors\, scattering of-shell
amplitudes etc.\nThey are however plagued with the singularities of the
free propagators\, of the integral kernel and of the amplitude itself
making very difficult its numerical computation. This difficulty was
overcome in the 50's with use of the "Wick rotation"\, which transforms
the Minkowski into an euclidean metric and allowed to obtain some
observables invariant in this transformation.\nThe euclidean Quantum Field
Thoery is nowadays a basic ingredient in all the lattice calculations. We
will show that this procedure is however not always legitimate - at least
in the original framework where its was formulated - without a careful
and hopeless knowledge of the analytic structure of the Bethe-Salpeter
amplitude in the complex momentum plane.\nWe will present two methods to
obtain the first Minkowski solutions for bound and scattering states. The
first method is based on the Nakanishi integral transform and the
projection of the Bethe-Salpeter equation into the Light Front. A second
method is based on a careful analysis of the singularities and provides a
direct solution of the original equation.\nThey will be illustrated with
the results of the Minkowski amplitudes for bound and scattering states\,
the electromagnetic elastic and transition form factors in the case of
scalar particles interacting by boson exchange kernels.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9449
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9449
END:VEVENT
BEGIN:VEVENT
SUMMARY:Francesco Sanfilippo\, "Metadynamics Surfing the Topological
Potential"
DTSTART;VALUE=DATE-TIME:20150401T130000Z
DTEND;VALUE=DATE-TIME:20150401T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9227@cern.ch
DESCRIPTION:Description: The evolution of topological charge in Lattice QCD
simulations performed close to the continuum limit is subject to a well-
known critical slowing down\, as an effect of the emerging of a well-
defined decomposition of the configuration space in terms of "topological
sectors"\, not connected by continuous deformation of the
fields.\nUnderstanding and removing the systematic errors induced by the
ergodicity breaking is of vital importance to improve the reliability of
modern lattice simulations.\nIn this talk I will show that Metadynamics
algorithm can be used to accelerate the evolution of the topological
charge in CP(N-1) models\, overcoming the problem in an efficient way that
can be easily generalised to QCD.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9227
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9227
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cosmological speculations : particle creation from energy
conservation in the Universe evolution
DTSTART;VALUE=DATE-TIME:20150507T130000Z
DTEND;VALUE=DATE-TIME:20150507T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9562@cern.ch
DESCRIPTION:Description: Hubble’s law proves that the Universe is
undergoing free expansion i.e. without external work. Thus the post big
bang temperature decrease must be due to particle creation\, if energy
conservation applies at every scale. This scenario is further backed up by
the consideration of the black body self energy of the early dominated
radiation era. That seems to provide an alternative consistent scheme for
our picture of the Universe evolution. No inflation needed.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9562
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9562
END:VEVENT
BEGIN:VEVENT
SUMMARY:Studies of two-nucleon interactions and few-body EM structure in
χEFT
DTSTART;VALUE=DATE-TIME:20150604T130000Z
DTEND;VALUE=DATE-TIME:20150604T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9735@cern.ch
DESCRIPTION:Description: A coordinate-space nucleon-nucleon potential is
constructed in chiral effective field theory (χEFT) retaining pions\,
nucleons and Δ-isobars as explicit degrees of freedom. The calculation of
the potential is carried out by including one- and two-pion-exchange
contributions up to next-to-next-to-leading order (N2LO) and contact
interactions up to next-to-next-to-next-to-leading order (N3LO). The low-
energy constants multiplying these contact interactions are fitted to the
2013 Granada database in the laboratory-energy range 0-300 MeV. Three
versions of this chiral potential\, corresponding to three dfferent
cutoffs\, have been developed. The cutoff regularizes the one- and two-
pion exchange as well as the contact part of the potential. A study of the
electromagnetic structure of A = 2 and 3 nuclei is also presented in
this talk. The calculation of the static properties and elastic form
factors of the deuteron and trinucleons (3He and 3H) is implemented in
momentum-space\, by utilizing nuclear wave functions obtained from chiral
potentials\, in combination with chiral electro-magnetic operators derived
up to one loop. Predictions for these physical observables are in a
satisfactory agreement with the experimental data.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9735
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9735
END:VEVENT
BEGIN:VEVENT
SUMMARY:An asymptotically free S-matrix for large-N QCD
DTSTART;VALUE=DATE-TIME:20150611T130000Z
DTEND;VALUE=DATE-TIME:20150611T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9673@cern.ch
DESCRIPTION:Description: Basing on a topological twistorial string theory
we construct certain\nS-matrix amplitudes that are both factorized on
linearly rising Regge trajectories\nand are asymptotically free\, as
opposed to all the previously known string models.\nWe argue that the
aforementioned twistor string is in fact the QCD string at large N.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9673
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9673
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ab initio calculation of the neutron-proton mass difference (Joint
Theory Seminar INFN-SNS-UniPI)
DTSTART;VALUE=DATE-TIME:20150616T123000Z
DTEND;VALUE=DATE-TIME:20150616T133000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9672@cern.ch
DESCRIPTION:Description: The existence and stability of atoms relies on the
fact that neutrons are more massive than protons. The mass difference is
only 0.14% of the average. This tiny mass splitting has significant
astrophysical and cosmological implications. A slightly smaller or larger
value would have led to a dramatically different universe. Here we show\,
how this difference results from the competition between electromagnetic
and mass isospin breaking effects. First we show how the masses of hadrons
are generated. Then we compute the neutron-proton mass splitting and show
that it is greater than zero by five standard deviations. In addition\,
this neutron-proton mass splitting is determined as a function of quark-
mass difference and electromagnetic coupling\, which answers questions in
quantitative anthrophics. As a tool we perform lattice Quantum
Chromodynamics plus Quantum-Electrodynamics computations.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9672
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9672
END:VEVENT
BEGIN:VEVENT
SUMMARY:Guido Cossu "Axial symmetry at finite temperature and the
eigenmodes of the Dirac operator"
DTSTART;VALUE=DATE-TIME:20150625T130000Z
DTEND;VALUE=DATE-TIME:20150625T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9789@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=9789
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9789
END:VEVENT
BEGIN:VEVENT
SUMMARY:Glueball decay in the Witten-Sakai-Sugimoto model
DTSTART;VALUE=DATE-TIME:20150702T130000Z
DTEND;VALUE=DATE-TIME:20150702T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9855@cern.ch
DESCRIPTION:Description: I present new results on glueball decay in the
Witten-Sakai-Sugimoto\nmodel\, a holographic top-down approach to low
energy QCD. I give a brief\nintroduction to glueballs and discuss our
calculations\, which favour an\nidentification of f_0(1710) as the
lightest scalar glueball.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9855
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9855
END:VEVENT
BEGIN:VEVENT
SUMMARY:QCD Vacuum generated Light-Heavy Quarks Interaction
DTSTART;VALUE=DATE-TIME:20150721T130000Z
DTEND;VALUE=DATE-TIME:20150721T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-9951@cern.ch
DESCRIPTION:Description: \n QCD vacuum is populated by instantons\,
corresponding to tunneling processes in the vacuum. This mechanism creates
strong vacuum gluon fields. As result\, QCD vacuum instantons induce very
strong interactions between light quarks\, which generate large dynamical
light quark mass M for initially almost massless quarks and can bound
these quarks to produce almost massless pions in accordance with the
spontaneous breaking of chiral symmetry (SCSB). On the other hand\, the
QCD vacuum instantons also interact with heavy quarks and are responsible
for the generation of the heavy-light quarks interactions\, which have
traces of the SCSB. As an example\, we derive heavy quarks -- light
mesons interaction terms for the light quark flavor number Nf=2 case. If
we take the average instanton size rho=0.35 fm\, and average inter-
instanton distance R=0.856 fm from our previous estimates\, we obtain at
leading order in the 1/Nc expansion dynamical light quark mass M = 570 MeV
and instanton media contribution to heavy quark mass Delta M=148 MeV.
These factors define the coupling between heavy and light quarks and\,
certainly\, between heavy quarks and light mesons. \n\n \nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=9951
LOCATION:
URL:https://agenda.infn.it/conferenceDisplay.py?confId=9951
END:VEVENT
BEGIN:VEVENT
SUMMARY:Torsional instantons effects in quantum gravity
DTSTART;VALUE=DATE-TIME:20150924T130000Z
DTEND;VALUE=DATE-TIME:20150924T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10133@cern.ch
DESCRIPTION:Description: We show that in the first order gravity theory
coupled to axions\, there exist new kind of instanton configurations
(solutions of Euclidean equations of motion) whose instanton number can be
interpreted as the torsional Nieh-Yan topological index. These torsional
pseudoparticles turn out to be the Giddings-Strominger wormholes.
Importantly\, these instantons are shown to induce tunneling between
degenerate topological vacua in gravity theory\, leading to a rich vacuum
structure exactly similar to the famous theta vacuum of gauge theories.
This nonperturbative quantum vacuum is characterised by a topological
vacuum angle\, which can be identified with the Barbero-Immirzi parameter.
We conclude with a discussion on how this nonperturbative vacuum
structure in quantum gravity\, hitherto unnoticed\, could have important
implications in the context of cosmology and various parity violating
phenomena in particle physics. In particular\, based on this framework we
propose a solution to the cosmological constant problem.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10133
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10133
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tuscan Meeting on Theoretical Physics (Joint INFN-SNS-UniFi-UniPi
activity)
DTSTART;VALUE=DATE-TIME:20151007T093000Z
DTEND;VALUE=DATE-TIME:20151007T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10127@cern.ch
DESCRIPTION:Description: 11:30 - Benjamin Doyon (King's College\,
London)\nTitle: Many-body quantum transport out of equilibrium: field
theory and emerging fluid dynamics.\n12:30 Lunch break\n14:30 - Alberto
Zaffaroni (Milano-Bicocca U. & INFN)\nTitle: AdS4 Black Holes and 3d
Gauge Theories \n15:30 Coffee break\n16:00 - Matthew Strassler (Harvard
U.)\nTitle: Seeking Insights and Avoiding Oversights at the LHC
\n- How to reach\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10127
LOCATION:Dipartimento di Fisica e Astronomia\, Universita' di Firenze\,
Polo Scientifico di Sesto Fiorentino room 281\, second floor
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10127
END:VEVENT
BEGIN:VEVENT
SUMMARY:Perturbative BV-BFV theories on manifolds with boundary
DTSTART;VALUE=DATE-TIME:20151015T133000Z
DTEND;VALUE=DATE-TIME:20151015T143000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10080@cern.ch
DESCRIPTION:Description: According to Segal and Atiyah\, a quantum field
theory on manifolds with boundary should be thought of as\, roughly
speaking\, the assignment of a vector space (space of states) to the
boundary and an element thereof (the state or the evolution operator) to
the bulk\, in a way that is compatible with gluing. In this talk (based on
joint work with P. Mnev and N. Reshetikhin) I will describe how this has
to be reformulated when working in perturbation theory. In particular\, I
will discuss the perturbative quantization of gauge theories on manifolds
with boundary. It turns out that\, under suitable assumptions\, the bulk
symmetries\, treated in the BV formalism\, naturally give rise to a
cohomological description of the reduced phase space (BFV formalism) in a
correlated way that can be quantized. Time permitting\, I will present the
example of BF theories.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10080
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10080
END:VEVENT
BEGIN:VEVENT
SUMMARY:Small Winding-Number Expansion: Vortex Solutions at Critical
Coupling
DTSTART;VALUE=DATE-TIME:20151022T130000Z
DTEND;VALUE=DATE-TIME:20151022T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10233@cern.ch
DESCRIPTION:Description: We study an axially symmetric solution of a vortex
in the Abelian-Higgs model at critical coupling in detail. Here we
propose a new idea for a perturbative expansion of a solution\, where the
winding number of a vortex is naturally extended to be a real number and
the solution is expanded with respect to it around its origin. We test
this idea on three typical constants contained in the solution and confirm
that this expansion works well with the help of the Pade' approximation.
For instance\, we analytically reproduce the value of the scalar charge of
the vortex with an error of O(10^{-6}).This expansion is also powerful
even for large winding numbers.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10233
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10233
END:VEVENT
BEGIN:VEVENT
SUMMARY:Axions in Cosmology
DTSTART;VALUE=DATE-TIME:20151029T140000Z
DTEND;VALUE=DATE-TIME:20151029T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10126@cern.ch
DESCRIPTION:Description: I describe a possible role of the chiral anomaly
and of a corresponding axion in understanding the origin of primordial
magnetic fields in the universe. A possible five-dimensional origin of the
axion is sketched. In passing\, I comment on the role the axion plays in
relativistic Magneto-Hydrodynamics. I then speculate on the role axions
may play in solving the mystery of dark energy and of the matter-anti-
matter asymmetry in the universe.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10126
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10126
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Geometry of Supermanifolds and Applications
DTSTART;VALUE=DATE-TIME:20151106T130000Z
DTEND;VALUE=DATE-TIME:20151106T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10235@cern.ch
DESCRIPTION:Description: Some recent developments in string theory and in
supersymmetric theories have prompted a deeper analysis of the geometry of
supermanifolds (manifolds with anticommuting coordinates). In the
seminar\, I will illustrate these new tools: in particular the
differential forms and the \nintegration theory on supermanifolds.
Several beautiful applications to string theory\, supergravity and
topological quantum field theories will be presented.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10235
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10235
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gauhar Abbas (IFIC\, Valencia)\, TBA
DTSTART;VALUE=DATE-TIME:20151112T140000Z
DTEND;VALUE=DATE-TIME:20151112T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10262@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=10262
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10262
END:VEVENT
BEGIN:VEVENT
SUMMARY:New Paradigm for Physics Beyond the Standard Model
DTSTART;VALUE=DATE-TIME:20151124T140000Z
DTEND;VALUE=DATE-TIME:20151124T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10142@cern.ch
DESCRIPTION:Description: The great desert hypothesis in particle physics
defines the relation between the electroweak scale and the high scale
where an unified theory could describe physics. In this talk we review the
desert hypothesis and discuss the main experimental constraints from rare
decays. We present a new class of theories for the TeV scale where the
desert hypothesis is not needed. In this context one predicts the
existence of new particles with baryon and lepton numbers called lepto-
baryons. The implications for cosmology\, collider experiments and the
unification of forces are discussed.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10142
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10142
END:VEVENT
BEGIN:VEVENT
SUMMARY:Neutron star tomography: inferring nuclear matter properties from
the cooling of X-ray transients
DTSTART;VALUE=DATE-TIME:20151124T100000Z
DTEND;VALUE=DATE-TIME:20151124T110000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10557@cern.ch
DESCRIPTION:Description: The observation of thermal emission from isolated
neutron stars (INSs) and the modeling of the corresponding cooling curves
has been very useful to get information on the properties of matter at
very high densities. More recently\, the detection of quiescent thermal
emission from NSs in low mass X-ray binary systems (LMXBs) after active
periods opened a new window to the physics of matter at lower densities. I
will present results for a few sources that have been recently monitored
and will show how the models can be used to establish constraints on the
crust and their transport properties\, depending on the astrophysical
scenarios assumed.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10557
LOCATION:Building C\, first floor 163
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10557
END:VEVENT
BEGIN:VEVENT
SUMMARY:Guido Martinelli "Flavor Physics for Non Experts : (A Theory)
Overview"
DTSTART;VALUE=DATE-TIME:20151217T140000Z
DTEND;VALUE=DATE-TIME:20151217T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10598@cern.ch
DESCRIPTION:Description: The status of the Unitarity Triangle including the
most recent results from LHC\, will be presented. Different possibilities
for detecting\, in the quark sector\, signals of physics beyond the
Standard Model will be considered. The conclusion is that\, even allowing
for general New Physics loop contributions\, the generalized Unitarity
Triangle must be very close to the Standard Model one. Together with
direct searches of new particles at LHC\, this result strongly constraints
models of New Physics.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10598
LOCATION:INFN Edificio C 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10598
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-equilibrium quantum transport and quantum "heat engines”
DTSTART;VALUE=DATE-TIME:20160121T140000Z
DTEND;VALUE=DATE-TIME:20160121T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10310@cern.ch
DESCRIPTION:Description: We investigate the particle and heat transport in
a quantum junction with the geometry of star graph. The system is in a
non-equilibrium steady state\, characterised by the temperatures and
chemical potentials of the heat reservoirs connected to the edges of the
graph. Although the total energy is conserved in this state\, the heat and
chemical potential energies are not separately conserved. The junction
behaves therefore as energy convertor\, which can be compared to a heat
engine. We will derive the relative efficiency and discuss its depends on
the statistics. We will also describe the probabilities for particle
emission and absorption from the heat reservoirs\, showing that they fully
characterise the quantum transport in the system. For scale invariant
interactions in the junction our results are exact and explicit.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10310
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10310
END:VEVENT
BEGIN:VEVENT
SUMMARY:Parametric description of the quantum measurement process
DTSTART;VALUE=DATE-TIME:20160128T140000Z
DTEND;VALUE=DATE-TIME:20160128T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10441@cern.ch
DESCRIPTION:Description: In this seminar I will present a description of
the quantum measurement process based on a parametric representation in
terms of generalised coherent states for the measuring apparatus[1]. The
relation between quantum measurements and decoherence will be first
investigated\, in order to formally express the necessity of the latter
for obtaining an informative output from the former. To this aim\, I will
refer to the dynamical behaviour of a particular model\, which is often
adopted in the literature for describing projector valued measures of
discrete observables. Having made use of generalised coherent states for
the apparatus\, I will then consider the consequences of its being
macroscopic\, referring to the relation between classical and large-N
limit of a quantum theory as established by G.Yaffe in Ref.[2]. This will
finally lead us to a description of the actual production of the output
that inherently includes both the probabilistic character of the process\,
with the Born rule properly recovered\, and a symmetry breaking that
entails the overall quantum state reduction[3].\n[1] Proceedings of the
National Academy of Sciences 110\, 6748-6753 (2013)\n[2] Rev. Mod. Phys.
54\, 407 (1982)\n[3] EPL 111\, 40008 (2015)\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10441
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10441
END:VEVENT
BEGIN:VEVENT
SUMMARY:VI Tuscan Meeting on Theoretical Physics
DTSTART;VALUE=DATE-TIME:20160204T100000Z
DTEND;VALUE=DATE-TIME:20160204T170000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10555@cern.ch
DESCRIPTION:Description: 11:00 - Malcolm J. Perry (DAMTP\,
Cambridge)\nTitle: The Information Paradox Revisited: Soft Black Hole
Hair\n12:00 Lunch break\n14:30 - Shigeki Sugimoto (Yukawa ITP\,
Kyoto)\nTitle: Holographic study of 3 dim YM-CS Theory with Defects\n15:30
Coffee break\n16:00 - Maxim Zabzine (Uppsala)\nTitle: 5D partition
functions for supersymmetric gauge theoriesHow to reach
\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=10555
LOCATION:Building C\, ground floor room 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10555
END:VEVENT
BEGIN:VEVENT
SUMMARY:D-brane's moduli in Open String Field Theory
DTSTART;VALUE=DATE-TIME:20160218T140000Z
DTEND;VALUE=DATE-TIME:20160218T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10558@cern.ch
DESCRIPTION:Description: The moduli space of D-branes has a microscopic
closed string description in terms of a continuous family of boundary
states. Open string field theory provides a new microscopic description in
terms of non-perturbative configurations of open strings which solve the
open string equation of motion. In this talk\, after a general
introduction to the subject\, I will explain how the SFT parameters are
non-trivially related to the boundary state parameters. Using a recently
discovered analytic solution I show that\, for large values of the
moduli\, the motion in moduli space is not driven by the open string
marginal field but it is a collective effect of all the massive modes. By
a numerical computation to high level\, this behavior is shown to be true
also in Feynman-Siegel gauge.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10558
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10558
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Physics of Binary Neutron Star merger: Insight from general
relativistic numerical simulations
DTSTART;VALUE=DATE-TIME:20160219T100000Z
DTEND;VALUE=DATE-TIME:20160219T110000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10943@cern.ch
DESCRIPTION:Description: In the eve of Gravitational Wave physics the
characterization of the gravitational wave signal emitted by compact
binary source will be a prominent role. We present results for three-
dimensional simulations of the dynamics of binary neutron star (BNS)
mergers from the late inspiral stage and the post-merger up to ∼20 ms
after the system has merged\, either to form a hyper-massive neutron star
(NS) or a rotating black hole (BH). We report here results for equal and
un-equal-mass models and on the strength of the Gravitational Signal and
its dependence on the EOS\, the total ADM mass and the mass ratio of the
two stars.\nWe use a semi-realistic descriptions of the equation of state
(EOS) where the EOS is described by a seven-segment piece-wise polytropic
with a thermal component given by Γth =1.8. One of the important
characteristics of the present investigation is that it is entirely
performed using only publicly available open source software\, the
Einstein Toolkit for the evolution and the LORENE code for the generation
of the initial models.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10943
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10943
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thermal Correlators\, Intertwining Operators\, and Rindler-AdS/CFT
DTSTART;VALUE=DATE-TIME:20160303T140000Z
DTEND;VALUE=DATE-TIME:20160303T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10737@cern.ch
DESCRIPTION:Description: I would like to propose a simple Lie-algebraic
approach to compute\nmomentum-space two-point functions of finite-
temperature CFT. For\nsimplicity\, in this talk I will focus on one-
dimensional CFT at finite\ntemperature dual to the two-dimensional AdS
spacetime in the Rindler\ncoordinates. I shall show that conformal
symmetry for thermal two-point\nfunctions manifests itself in a form of
recurrence relations in the\ncomplex frequency space. I shall then show
that real-time thermal\ntwo-point functions (such as retarded\, advanced
and time-ordered\ncorrelators) are all given by solutions to the
recurrence relations. I\nalso discuss that these recurrence relations just
follow from the\nintertwining operator properties of CFT two-point
functions.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=10737
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10737
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hydrodynamic transport\, laminar flow\, and the AdS/CFT viscosity
bound in a graphene field effect transistor
DTSTART;VALUE=DATE-TIME:20160317T140000Z
DTEND;VALUE=DATE-TIME:20160317T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11047@cern.ch
DESCRIPTION:Description: Graphene sheets encapsulated between crystals of
boron nitride host a unique electron system that due to weak electron-
phonon scattering allows micrometer-scale ballistic transport even at room
temperature [1\,2\,3\,4]. Above liquid nitrogen temperatures\, these
electron liquids are expected to display local equilibrium\, enabled by
strong electron-electron interactions [5]. Under these conditions\,
electrons in doped samples are expected to behave as a viscous liquid and
may exhibit hydrodynamic phenomena akin to those observed in classical and
quantum liquids. In this talk I will report on results of combined
theoretical and experimental work [6\,7] showing unambiguous evidence for
this long-sought transport regime. In particular\, I will discuss how
high-quality graphene sheets in the Fermi liquid regime (k_B T ≲ E_F)
exhibit an anomalous (negative) voltage drop near current injection
points\, which is attributed to the formation of whirlpools in the
electron flow. Measurements of these quasi-local electrical signals enable
to extract the value of the kinematic viscosity of the two-dimensional
massless Dirac fermion liquid in graphene\, which is found to be an order
of magnitude larger than that of honey\, in quantitative agreement with
many-body theory [8]. Finally\, I will discuss how our results near the
charge neutrality point (k_B T≫ E_F) are compatible with the AdS/CFT
viscosity bound [9\,10]. \nOur work represents the first step towards the
observation of nearly perfect fluidity and turbulence in solid-state
devices.\n\nReferences\n[1] A.S. Mayorov et al.\, Nano Lett. 11\,
2396 (2011).\n[2] L. Wang et al.\, Science 342\, 614 (2013).\n[3] T.
Taychatanapat et al.\, Nature Phys. 9\, 225 (2013).\n[4] A. Woessner
et al.\, Nature Mater. 14\, 421 (2015).\n[5] M. Polini and G.
Vignale\, The quasiparticle lifetime in a doped graphene sheet. In No-
nonsense physicist: an overview of Gabriele Giuliani's work and life (eds.
M. Polini\, G. Vignale\, V. Pellegrini\, and J.K. Jain) (Edizioni della
Normale\, Pisa\, 2016).\n[6] D. Bandurin\, I. Torre\, R.K. Kumar\, M. Ben
Shalom\, A. Tomadin\, A. Principi\, G.H. Auton\, E. Khestanova\, K.S.
NovoseIov\, I.V. Grigorieva\, L.A. Ponomarenko\, A.K. Geim\, and M.
Polini\, Science (February 11\, 2016).\n[7] I. Torre\, A. Tomadin\,
A.K. Geim\, and M. Polini\, Phys. Rev. B 92\, 165433 (2015).\n[8] A.
Principi\, G. Vignale\, M. Carrega\, and M. Polini\, Phys. Rev. B (2016)
and arXiv:1506.06030.\n[9] P.K. Kovtun\, D.T. Son\, and A.O. Starinets\,
Phys. Rev. Lett. 94\, 111601 (2005).\n[10] M. Müller\, J.
Schmalian\, and L. Fritz\, Phys. Rev. Lett. 103\, 025301 (2009).\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11047
LOCATION:Building C\, First Floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11047
END:VEVENT
BEGIN:VEVENT
SUMMARY:Super-renormalizable models of quantum gravity and some of their IR
properties
DTSTART;VALUE=DATE-TIME:20160321T140000Z
DTEND;VALUE=DATE-TIME:20160321T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-10739@cern.ch
DESCRIPTION:Description: The main difficulty of perturbative quantum
gravity (QG) in 4d is \nthe conflict between renormalizability and
unitarity. The simplest\nversion of QG is based on General Relativity and
is non-renormalizable. \nOne can construct renormalizable and even
superrenormalizable versions of \nQG by introducing higher derivatives\,
but then one has to deal with the \nunphysical higher derivative massive
ghosts. At the same time polynomial \nsuperrenormalizable versions of QG
have certain attractive features\, \nsuch as unambiguous and exactly
calculable beta-functions and possible \nLee-Wick type unitarity in case
when all extra poles are complex. The \nnon-polynomial models of QG have
no ghosts at the tree level\, but \ntaking loop corrections into account
one meets infinite amount of \nghost-like complex states. In the IR one
can prove that the modified\nNewton limit in all these models is
singularity-free. After a survey \nof all these issues some list of
unsolved interesting problems will be \ndiscussed.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=10739
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=10739
END:VEVENT
BEGIN:VEVENT
SUMMARY:Theoretical uncertainty quantification and precision nuclear
physics
DTSTART;VALUE=DATE-TIME:20160331T090000Z
DTEND;VALUE=DATE-TIME:20160331T100000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11154@cern.ch
DESCRIPTION:Description: Experimental and theoretical developments in low-
energy nuclear physics go hand in hand\, sometimes led by experiments
andother times by theory. Ab initio nuclear models are required for a
truly predictive theory to describe nuclei and their interactions. A key
message will be that predictive power requires the ability to quantify
theoretical uncertainties. While it is true that theoretical error
estimates are difficult to obtain\, the pursuit thereof plays a pivotal
role in science. Reliable theoretical errors can help to determine to what
extent a disagreement between experiment and theory hints at new
physics\, and they can provide input to identify the most relevant new
experiments. As will be shown\, nuclear theory is at a stage where such
questions can be addressed.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11154
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11154
END:VEVENT
BEGIN:VEVENT
SUMMARY:Topological properties of QCD across deconfinement
DTSTART;VALUE=DATE-TIME:20160407T130000Z
DTEND;VALUE=DATE-TIME:20160407T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11048@cern.ch
DESCRIPTION:Description: In this talk I will present a general perspective
on the topological properties and theta-angle dependence of gauge theories
at finite temperature. The main aim is to highlight the physical ideas
involved and discuss some recent results obtained by using Lattice QCD
simulations\, trying to avoid as much as possible technical details.
Besides the theoretical interest of studying a completely non-perturbative
aspect of QCD\, this subject has also some direct phenomenological
implications\,\nbeing strictly connected to the physics of axions and to
their possible role as dark matter candidates.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11048
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11048
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stochastic and dynamic aspects of energy localization in nonlinear
lattices with constraints
DTSTART;VALUE=DATE-TIME:20160414T123000Z
DTEND;VALUE=DATE-TIME:20160414T133000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11295@cern.ch
DESCRIPTION:Description: Sometimes it is more convenient to store excess
energy in a small region of space rather than spreading it over all the
available volume. This may happen when the evolution of a system is
characterized by additional dynamic constraints that promote energy
localization for entropic reasons.\nIn this seminar I will discuss the
role of peculiar nonlinear excitations (discrete breathers) for the
localization process in networks of coupled oscillators. Particular
attention will be devoted to the dynamics of a Discrete Nonlinear
Schroedinger Equation which exhibits a metastable phase with a finite
density of breathers and partial energy localization.\nSuch state persists
over very long (astronomical) times as a consequence of the extremely low
interaction of these excitations with the surrounding background.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11295
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11295
END:VEVENT
BEGIN:VEVENT
SUMMARY:TNPI2016 – XV Conference on Theoretical Nuclear Physics in Italy
DTSTART;VALUE=DATE-TIME:20160420T070000Z
DTEND;VALUE=DATE-TIME:20160422T110000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11352@cern.ch
DESCRIPTION:Description: \nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11352
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11352
END:VEVENT
BEGIN:VEVENT
SUMMARY:The D-material universe
DTSTART;VALUE=DATE-TIME:20160428T130000Z
DTEND;VALUE=DATE-TIME:20160428T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11346@cern.ch
DESCRIPTION:Description: I will present the "D-material universe"\, a
model of a brane world propagating in a higher-dimensional bulk populated
by collections of D-particle stringy defects. I will discuss how
D-particle recoil velocity excitations as a result of the interactions of
the defects with stringy matter and radiation on the brane world\, lead to
a vector field that can assist the growth of large-scale structure. I
will then analyse the circumstances under which the D-particle recoil
velocity fluid may "mimic" dark matter in galaxies. Finally\, I will
discuss a cosmic evolution for the D-material universe by analysing the
conditions under which the late eras of this universe associated with
large-scale structure are connected to early epochs\, where inflation
takes place. I will show that inflation can be induced by dense
populations of D-particles in the early universe\, with the role of the
inflaton field played by the condensate of the D-particle recoil-velocity
fields under their interaction with relativistic stringy matter\, only for
sufficiently large brane tensions and low string mass scales compared to
the Hubble scale. For large string scales\, where the recoil-velocity
condensate fields are weak\, inflation may be driven by dilaton (or other
moduli) fields in the underlying string theory.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11346
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11346
END:VEVENT
BEGIN:VEVENT
SUMMARY:Unexpected effects from long-range interactions
DTSTART;VALUE=DATE-TIME:20160505T130000Z
DTEND;VALUE=DATE-TIME:20160505T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11351@cern.ch
DESCRIPTION:Description: The recent theoretical studies and experimental
realizations of long-range interacting systems unveiled new striking
phenomena\, overcoming usual paradigms of the short-range physics. In my
talk I exploit long-range generalizations of the Ising chain in a
transverse field to illustrate some of these phenomena\,as: i) the
occurrence of nonlocal effects\, like the lack of a maximum propagation
velocity for a signal or the algebraic decay for correlation functions in
gapped regimes\, ii) the breakdown of conformal symmetry for continuous
critical points\, iii) the appearance of continuous phase transitions with
nonvanishing mass gap\, leading to new (families of) phases and new edge
excitations\, iv) the necessity to consider non standard decoupling
hierachies in RG approaches. In spite of the relative simplicity of the
assumed toy-models\, the\ndescribed properties are inferred to be pretty
general for long-range systems.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11351
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11351
END:VEVENT
BEGIN:VEVENT
SUMMARY:Some geometrical aspects of entanglement in Holography & CFT (from
the lattice)
DTSTART;VALUE=DATE-TIME:20160512T130000Z
DTEND;VALUE=DATE-TIME:20160512T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11291@cern.ch
DESCRIPTION:Description: In the first part we discuss the holographic
entanglement entropy in AdS4/CFT3 for finite domains with generic shapes.
For smooth shapes the constant term can be evaluated by employing a
generalisation of the Willmore functional for two dimensional surfaces.
Explicit examples are given for asymptotically AdS4 black holes\, domain
wall geometries and time dependent backgrounds. The second part is focused
on the entanglement negativity in 2+1 dimensions. We present some
numerical results for two adjacent regions in a two dimensional harmonic
lattice in the massless regime\, discussing the area law behaviour and the
corner contributions.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11291
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11291
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Cosmological Slavnov-Taylor Identity from BRST Symmetry in
Single-Field Inflation
DTSTART;VALUE=DATE-TIME:20160525T130000Z
DTEND;VALUE=DATE-TIME:20160525T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11502@cern.ch
DESCRIPTION:Description: The cosmological Slavnov-Taylor (ST) identity of
the Einstein-Hilbert action coupled to a single inflaton field is obtained
from the Becchi-Rouet-Stora-Tyutin (BRST) symmetry associated with
diffeomorphism invariance. The analysis is carried out in the Arnowitt-
Deser-Misner (ADM) formalism. The consistency conditions between the
correlators of the scalar and tensor modes in the squeezed limit are then
derived from the ST identity\, together with the softly broken conformal
symmetry. Maldacena's original relations connecting the 2- and 3-point
correlators at horizon crossing are recovered\, as well as the\nnext-to-
leading corrections\, controlled by the special conformal
transformations.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11502
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11502
END:VEVENT
BEGIN:VEVENT
SUMMARY:Monopoles\, instantons and the Helmholtz equation
DTSTART;VALUE=DATE-TIME:20160526T130000Z
DTEND;VALUE=DATE-TIME:20160526T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11378@cern.ch
DESCRIPTION:Description: In this talk I will discuss a technique for
constructing hyperbolic monopoles by dimensional reduction of smooth
instantons living on 4-mnaifolds which are non-trivial circle fibrations
over hyperbolic 3-space. This technique provides a convenient way of
constructing singular hyperbolic monopoles. For smooth monopoles it
reproduces the JNR method\, but offers new insight about it.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11378
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11378
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alessandro Nada "Applications of Jarzynski's relation in lattice
gauge theories"
DTSTART;VALUE=DATE-TIME:20160622T140000Z
DTEND;VALUE=DATE-TIME:20160622T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11658@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=11658
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11658
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cluster mean-field approach to the steady-state phase diagram of
dissipative spin systems
DTSTART;VALUE=DATE-TIME:20160707T130000Z
DTEND;VALUE=DATE-TIME:20160707T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11691@cern.ch
DESCRIPTION:Description: We show that short-range correlations have a
dramatic impact on the steady-state phase diagram of quantum driven-
dissipative systems. This effect\, never observed in equilibrium\, follows
from the fact that ordering in the steady state is of dynamical origin\,
and is established only at very long time\, whereas in thermodynamic
equilibrium it arises from the properties of the (free-)energy. Tiny
correlations may be amplified in the dynamics and therefore have a strong
impact in the steady state. To this scope\, by combining the cluster
methods extensively used in equilibrium phase transitions to quantum
trajectories and tensor-network techniques\, we extend them to non-
equilibrium phase transitions in dissipative many-body systems. We analyze
in detail a model of spins-1/2 on a lattice interacting through an XYZ
Hamiltonian\, each of them coupled to an independent environment which
induces incoherent spin flips. In the steady-state phase diagram derived
from our cluster approach\, the location of the phase boundaries and even
its topology radically change\, introducing re-entrance of the
paramagnetic phase as compared to the single-site mean field where
correlations are neglected. Furthermore a stability analysis of the
cluster mean-field indicates a susceptibility towards a possible
incommensurate ordering\, not present if short-range correlations are
ignored.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=11691
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11691
END:VEVENT
BEGIN:VEVENT
SUMMARY:Future Reactor Neutrino Experiments
DTSTART;VALUE=DATE-TIME:20160711T130000Z
DTEND;VALUE=DATE-TIME:20160711T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11773@cern.ch
DESCRIPTION:Description: Two of the main problems that neutrino experiments
will try to solve in the next decade are the determination of the mass
hierarchy and the measurement of the (eventual) CP violation in the
leptonic sector. INFN is part of the JUNO collaboration: this reactor
neutrino experiment\, located in China\, will attempt to answer to the
first question\; its scientific program will also include the precise
measurement of the mixing parameters\, in particular theta_12 and
DeltaM^2_12. However\, since only the survival probability will be able to
measured\, it will not be possible to determine delta_CP. I will give an
overview of this kind of experiment\, discussing the precision that be
achieved and the challenges that will be faced\, like the rejection of the
background due to cosmogenic muons and the possible problems related to
systematic errors in the energy calibration. I will also discuss briefly
the possibility offered to the Accelerator Driven Subcritical Reactors
(ADS). Here spent nuclear fuel will be used to substain a nuclear power
plant. The additional neutrons needed for the chain reaction will be
provided by a accelerator\, where a proton beam hits a spallation target.
This will produce\, as a by-product\, a large amount of muon
antineutrinos\; using liquid scintillators it will be possible to study
the disappearance probability and to measure delta_CP.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11773
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11773
END:VEVENT
BEGIN:VEVENT
SUMMARY:The last gasp of dark matter effective field theory
DTSTART;VALUE=DATE-TIME:20160714T130000Z
DTEND;VALUE=DATE-TIME:20160714T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11672@cern.ch
DESCRIPTION:Description: The effective field theory (EFT) parametrization
for dark matter (DM) searches at colliders has become notoriously
unpopular\, due to its incapability of describing new physics with light
mediators. Simplified models have taken over. In this talk\, I will argue
that the two points of view are instead complementary\, and discuss large
classes of theories where the EFT is indeed necessary to organize DM tests
at colliders.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=11672
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11672
END:VEVENT
BEGIN:VEVENT
SUMMARY:Simple models of topological solitons with orientational moduli and
holography
DTSTART;VALUE=DATE-TIME:20160720T130000Z
DTEND;VALUE=DATE-TIME:20160720T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11797@cern.ch
DESCRIPTION:Description: We consider distinct cases of solitons with
orientational moduli coming from a particularly simple initial model
inspired by Witten’s cosmic strings. We show that from these models one
can construct solitonic solutions with interesting consequences. Finally\,
we extend the construction towards strong coupling using holographic
techniques.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=11797
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11797
END:VEVENT
BEGIN:VEVENT
SUMMARY:Savvas Zafeiropoulos ""Complex Langevin Dynamics for a Random
Matrix Model of QCD at finite density"
DTSTART;VALUE=DATE-TIME:20160922T130000Z
DTEND;VALUE=DATE-TIME:20160922T143000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-11956@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=11956
LOCATION:Building C\, 1st floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=11956
END:VEVENT
BEGIN:VEVENT
SUMMARY:VII Tuscan Meeting on Theoretical Physics
DTSTART;VALUE=DATE-TIME:20161004T090000Z
DTEND;VALUE=DATE-TIME:20161004T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12003@cern.ch
DESCRIPTION:Description: 11:00 - Glenn Barnich (ULB\, Brussels)\nTitle:
Finite BMS transformations\nAbstract: After a review of holographic
features of general relativity in 3 and 4 dimensions\, I will show how to
derive the transformation laws of the Bondi mass and angular momentum
aspects under finite supertranslations\, superrotations and complex Weyl
rescalings.\n12:00 Lunch break\n14:30 - Paul Townsend (DAMPT\,
Cambridge)\nTitle: Worldline time-reversal and a CPT anomaly\nAbstract:
The action for a massless particle in 4D Minkowski spacetime has a
worldline time-reversing symmetry corresponding to CPT invariance of the
quantum theory. The analogous symmetry of the N-extended superparticle is
anomalous when N is odd\; in the supertwistor formalism this is seen as a
1D analog of the 3D Parity anomaly. This result accords with the fact that
there are no CPT self-conjugate massless N=1 supermultiplet. There is one
when N is even\, and it has 2**N states when N/2 is even but 2**(N+1)
when N/2 is odd. From the perspective of worldline time-reversal
invariance\, this state doubling for odd N/2 is due to a Kramers
degeneracy.\n15:30 Coffee break\n16:00 - Massimo Porrati (NYU\, New
York))\nTitle: Shaving off Black Hole Soft Hair\nAbstract: After recalling
the definition of black hole "hair" we explain why the only interesting
hair are those that are also remnants. Next\, we will examine a recent
proposal by Hawking\, Perry and Strominger\, who suggest that soft photons
and gravitons can be regarded as black hole hair that may be relevant to
the black hole information paradox. We will make use of factorization
theorems for infrared divergences of the S-matrix to argue that\, by
appropriately dressing in and out hard states\, the soft-quanta-dependent
part of the S-matrix becomes essentially trivial\, in the sense that the
information paradox can be fully formulated in terms of dressed hard
states\, which do not depend on soft quanta.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=12003
LOCATION:Scuola Normale Superiore Aula Bianchi
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12003
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d Dualities and Monopole Superpotentials
DTSTART;VALUE=DATE-TIME:20161028T080000Z
DTEND;VALUE=DATE-TIME:20161028T090000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12058@cern.ch
DESCRIPTION:Description: We start considering the problem of a D3 brane
ending on pqwebs of 5 branes. We find the N=2 3d theories describing the
systems and show that they admit different dual descriptions\, related by
'piece-wise' Abelian mirror symmetry. Interestingly\, some of the dual
phases involve monopole operators in the superpotential. In the simplest
case\, U(1) with 3 flavors and monopole superpotential has a dual
description as a cubic Wess-Zumino model. When projected to the S^3
partition function\, this duality gives a physical explanation of an
integral identity known as 'new pentagon' or 'ultimate integral'. We also
consider generalizations to non Abelian gauge theories\, leading to
Aharony-Seiberg dualities with monopole superpotentials.\n\nBased on
http://arxiv.org/pdf/1605.02675.pdf \, S.B. and Sara Pasquetti.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=12058
LOCATION:Building C\, 1st floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12058
END:VEVENT
BEGIN:VEVENT
SUMMARY:Black holes with Skyrme-type hair
DTSTART;VALUE=DATE-TIME:20161103T141500Z
DTEND;VALUE=DATE-TIME:20161103T151500Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12186@cern.ch
DESCRIPTION:Description: Abstract: The first discovered scalar hair of
black holes was found in the Skyrme model\, hinting at a loop hole in the
weak no-hair conjecture for the Kerr-Newman family of black holes. We
begin by considering Schwarzschild black holes with a special subsector of
the Skyrme-type models and find that no hair is exists in the integrable
submodel. Turning to a more generic model\, which ruins integrability\,
still does not allow for Skyrme-type hair unless the Skyrme term (fourth-
order derivative) term is present. I will also discuss some gravitating
analytical solutions found along the way.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=12186
LOCATION:INFN\, Building C\, Pisa 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12186
END:VEVENT
BEGIN:VEVENT
SUMMARY:Circumgalactic Cosmology
DTSTART;VALUE=DATE-TIME:20161207T140000Z
DTEND;VALUE=DATE-TIME:20161207T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12232@cern.ch
DESCRIPTION:Description: Abstract: Galaxy is not an island universe
isolated in empty space.\nIntergalactic space is filled with materials\,
at least\, with dark matter and dust\, as we could probe (hydrogen is more
difficult to probe)\, thus significant interplay exists between galaxies
and the circumgalactic environment. Typical entity that we can use to
probe circumgalactic/intergalactic space is quasar-absorption-line
systems. I address about the nature and problems with these systems\, as I
probed with our circumgalactic studies.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=12232
LOCATION:INFN\, Area Pontecorvo\, Building C 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12232
END:VEVENT
BEGIN:VEVENT
SUMMARY:Masayasu Hasegawa "Chiral Symmetry breaking\, instantons and
monopoles in QCD"
DTSTART;VALUE=DATE-TIME:20161207T100000Z
DTEND;VALUE=DATE-TIME:20161207T110000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12380@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=12380
LOCATION:Building C\, first floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12380
END:VEVENT
BEGIN:VEVENT
SUMMARY:Primordial black holes as a dark matter candidate ?
DTSTART;VALUE=DATE-TIME:20170112T140000Z
DTEND;VALUE=DATE-TIME:20170112T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12518@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=12518
LOCATION:INFN\, building C 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12518
END:VEVENT
BEGIN:VEVENT
SUMMARY:Emergent Anyon Distribution in the Unruh Effect
DTSTART;VALUE=DATE-TIME:20170302T140000Z
DTEND;VALUE=DATE-TIME:20170302T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12834@cern.ch
DESCRIPTION:Description: Abstract: In this talk I study a uniformly
accelerating detector coupled to a scalar primary operator of scaling
dimension $\\Delta$ in $d$-dimensional conformal field theory. I show
that\, for a generic value of the scaling dimension $\\Delta$\, the power
spectrum of the detector\nobeys the anyon distribution at the Unruh
temperature $T=a/2\\pi$\, where $a$ is a constant proper acceleration of
the detector. More precisely\, I find that\, at the linear order of
perturbation theory\, the detector's power spectrum coincides with the
thermal distribution function for non-interacting anyon gas proposed by
Liguori\, Mintchev and Pilo in\n1999. It is observed that the scaling
dimension $\\Delta$ plays the role of the statistical parameter which
interpolates between the Bose-Einstein and Fermi-Dirac distributions. This
formal coincidence with anyon distribution can be regarded as a
generalization of Takagi's\n``statistics inversion'' in the Unruh
effect.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=12834
LOCATION:INFN\, building C 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12834
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-Abelian vortex strings and their applications
DTSTART;VALUE=DATE-TIME:20170320T140000Z
DTEND;VALUE=DATE-TIME:20170320T150000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12827@cern.ch
DESCRIPTION:Description: I review remarkable developments associated with
non-Abelian vortex strings\nand their applications both in supersymmetric
and non-supersymmetric\nfield theories\, including some problems from
condensed matter physics.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=12827
LOCATION: 250
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12827
END:VEVENT
BEGIN:VEVENT
SUMMARY: "Studying biological matter with theoretical physics"
DTSTART;VALUE=DATE-TIME:20170410T130000Z
DTEND;VALUE=DATE-TIME:20170410T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12995@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=12995
LOCATION:
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12995
END:VEVENT
BEGIN:VEVENT
SUMMARY:Looking to dark matter through gamma rays anisotropies
DTSTART;VALUE=DATE-TIME:20170427T130000Z
DTEND;VALUE=DATE-TIME:20170427T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-12965@cern.ch
DESCRIPTION:Description: Abstract: Anisotropies in the extragalactic
electromagnetic emission originated from dark\nmatter represent an
emerging tool in the quest for a particle dark matter\nsignal. These
anisotropies are due to the cumulative emission from unresolved\ndark
matter structures\, which are present at any scale: galaxy
clusters\,\nindividual galaxies\, subhalos inside galaxies. The same
structures can be probed\nby gravitational tracers of the dark matter
distribution in the Universe: this\nis obtained by large-scale-structure
surveys\, but in the future a good wealth of\nadditional and complementary
information will be available from weak lensing\nsurveys. The study of
gamma-rays anisotropies and the cross-correlation between\nthe dark matter
signal and gravitational tracers offer a novel and powerful\nopportunity
to probe the particle physics nature of dark matter. The talk
will\nintroduce details and features of gamma-rays anisotropies and give
perspectives\nof the cross-correlation approach.\nURL:
https://agenda.infn.it/conferenceDisplay.py?confId=12965
LOCATION:INFN\, building C 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=12965
END:VEVENT
BEGIN:VEVENT
SUMMARY:Higher Dimensional QFTs
DTSTART;VALUE=DATE-TIME:20170502T130000Z
DTEND;VALUE=DATE-TIME:20170502T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-13371@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=13371
LOCATION: 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=13371
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sandor Katz\, "Axion cosmology from lattice QCD"
DTSTART;VALUE=DATE-TIME:20170504T130000Z
DTEND;VALUE=DATE-TIME:20170504T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-13139@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=13139
LOCATION:Building C\, ground floor 131
URL:https://agenda.infn.it/conferenceDisplay.py?confId=13139
END:VEVENT
BEGIN:VEVENT
SUMMARY:Guido Cossu\, "The Anderson localisation of low modes in finite
temperature QCD"
DTSTART;VALUE=DATE-TIME:20170511T130000Z
DTEND;VALUE=DATE-TIME:20170511T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-13140@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=13140
LOCATION:Building C\, 1st floor 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=13140
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Cosmological Lithium Problem Revisited
DTSTART;VALUE=DATE-TIME:20170615T130000Z
DTEND;VALUE=DATE-TIME:20170615T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-13718@cern.ch
DESCRIPTION:Description: Big Bang nucleosynthesis (BBN) theory predicts the
abundances of the light elements D\, 3He\, 4He and 7Li produced in the
early\nuniverse. The primordial abundances of D and 4He inferred from
observational data are in good agreement with predictions\,\nhowever\, the
BBN theory overestimates the primordial 7Li abundance by about a factor
of three. This is the so-called\n“cosmological lithium problem”.
Solutions to this problem using conventional astrophysics and nuclear
physics have not been\nsuccessful over the past few decades\, probably
indicating the presence of new physics during the era of BBN. We
have\ninvestigated the impact on BBN predictions of adopting a generalized
distribution to describe the velocities of nucleons in the\nframework of
a non-extensive statistics. This generalized velocity distribution is
characterized by a parameter q\, and reduces\nto the usually assumed
Maxwell-Boltzmann distribution for q = 1. We find excellent agreement
between predicted and observed\nprimordial abundances of D\, 4He and 7Li\,
suggesting a possible new solution to the cosmological lithium
problem.\nURL: https://agenda.infn.it/conferenceDisplay.py?confId=13718
LOCATION:INFN\, Edificio C
URL:https://agenda.infn.it/conferenceDisplay.py?confId=13718
END:VEVENT
BEGIN:VEVENT
SUMMARY:RG flow in higher derivative gravity
DTSTART;VALUE=DATE-TIME:20170712T130000Z
DTEND;VALUE=DATE-TIME:20170712T140000Z
DTSTAMP;VALUE=DATE-TIME:20170724T043248Z
UID:indico-event-13879@cern.ch
DESCRIPTION:URL: https://agenda.infn.it/conferenceDisplay.py?confId=13879
LOCATION:Aula seminari\, Ed C\, Dip. Fisica 248
URL:https://agenda.infn.it/conferenceDisplay.py?confId=13879
END:VEVENT
END:VCALENDAR