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BEGIN:VEVENT
SUMMARY:Effective actions for fluids from holography
DTSTART;VALUE=DATE-TIME:20150417T070000Z
DTEND;VALUE=DATE-TIME:20150417T074000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74424@agenda.infn.it
DESCRIPTION:Speakers: Jan de Boer ()\nEffective actions based on scalar fi
elds or Goldstone bosons are frequently used to describe fluids. The preci
se interpretation of such actions from a gravitational point of view has b
een somewhat unclear. In this talk I will describe a holographic interpret
ation of such effective actions and discuss the connection to other approa
ches to fluid/gravity duality.\n\nhttps://agenda.infn.it/event/8572/contri
butions/74424/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74424/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic graphene bilayers
DTSTART;VALUE=DATE-TIME:20150415T085000Z
DTEND;VALUE=DATE-TIME:20150415T092000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74423@agenda.infn.it
DESCRIPTION:Speakers: Gianluca Grignani ()\nThe possibility of inter-layer
exciton condensation in holographic models of a strongly coupled double m
onolayer Dirac semi-metal are studied in detail. It is showed that\, when
the charge densities on the layers are exactly balanced so that\, at weak
coupling\, the Fermi surfaces of electrons in one monolayer and holes in t
he other monolayer would be perfectly nested\, inter-layer condensates can
form for any separation of the layers. The case where both monolayers are
charge neutral is special. There\, the inter-layer condensate occurs only
for small separations and is replaced by an intra-layer exciton condensat
e at larger separations. The phase diagram for charge balanced monolayers
for a range layer separations and chemical potentials is found. We also sh
ow that\, in semi-metals with multiple species of massless fermions\, the
balance of charges required for Fermi surface nesting can occur spontaneou
sly by breaking some of the internal symmetry of the monolayers. This coul
d have important consequences for experimental attempts to find inter-laye
r condensates.\n\nhttps://agenda.infn.it/event/8572/contributions/74423/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74423/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Turbulent strings in AdS/CFT
DTSTART;VALUE=DATE-TIME:20150414T122000Z
DTEND;VALUE=DATE-TIME:20150414T125000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74422@agenda.infn.it
DESCRIPTION:Speakers: Takaaki Ishii ()\nI will talk about nonlinear dynami
cs of the flux tube between an external quark-antiquark pair in N=4 SYM us
ing the dual string description in AdS/CFT. Perturbing the endpoints of th
e string and numerically computing its nonlinear time evolution\, I will s
how that cusps can be formed on the string. I will discuss a connection be
tween this phenomenon and turbulent behavior in the energy spectrum.\n\nht
tps://agenda.infn.it/event/8572/contributions/74422/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74422/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entwinement and the emergence of spacetime
DTSTART;VALUE=DATE-TIME:20150417T074000Z
DTEND;VALUE=DATE-TIME:20150417T082000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74421@agenda.infn.it
DESCRIPTION:Speakers: Vijay Balasubramanian ()\nhttps://agenda.infn.it/eve
nt/8572/contributions/74421/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74421/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stringy hadrons
DTSTART;VALUE=DATE-TIME:20150417T154000Z
DTEND;VALUE=DATE-TIME:20150417T161000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74420@agenda.infn.it
DESCRIPTION:Speakers: Jacob Sonnenschein ()\nMotivated by holographic stri
ngy hadrons\, I propose a model of stringy hadrons in four flat space-time
dimensions. Mesons are rotating open strings with massive ``quarks" in th
eir endpoints. Baryons are open strings with a quark on one end and a bary
onic vertex and a di-quark on the other end. Glueballs are rotating folded
closed strings.\nA detailed fit of the model to experimental data will b
e presented including extracting the best fit parameters for the string te
nsion\, intercept and endpoint masses. The issue of the identification ``
nature's gluballs" will be addressed.\nI will discuss and report on certa
in progress about the yet unsolved problem of the quantization of rotatin
g bosonic open ( with massive endpoints) and folded closed strings in fou
r dimensions.\n\nhttps://agenda.infn.it/event/8572/contributions/74420/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74420/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Monotonicity Theorem for Two-dimensional Boundaries and Defects
DTSTART;VALUE=DATE-TIME:20150416T154000Z
DTEND;VALUE=DATE-TIME:20150416T161000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74419@agenda.infn.it
DESCRIPTION:Speakers: Andrew O'Bannon ()\nI will propose a proof for a mon
otonicity theorem\, or c-theorem\, for a three-dimensional Conformal Field
Theory (CFT) on a space with a boundary\, and for a two-dimensional defec
t coupled to a higher-dimensional CFT. The proof is applicable only to ren
ormalization group flows that are localized at the boundary or defect\, su
ch that the bulk theory remains conformal along the flow\, and that preser
ve locality\, unitarity\, and Euclidean invariance along the defect. The m
ethod of proof is a generalization of Komargodski’s proof of Zamolodchik
ov’s c-theorem. The key ingredient is an external “dilaton” field in
troduced to match Weyl anomalies between the ultra-violet (UV) and infra-r
ed (IR) fixed points. Unitarity of the dilaton’s effective action guaran
tees that a certain coefficient in the boundary/defect Weyl anomaly must t
ake a value in the UV that is larger than (or equal to) the value in the I
R.\n\nhttps://agenda.infn.it/event/8572/contributions/74419/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74419/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic spin fluctuation and competition of two orders
DTSTART;VALUE=DATE-TIME:20150416T151000Z
DTEND;VALUE=DATE-TIME:20150416T154000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74418@agenda.infn.it
DESCRIPTION:Speakers: Sang-Jin Sin ()\nhttps://agenda.infn.it/event/8572/c
ontributions/74418/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74418/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic Quantum Hall Ferromagnetism
DTSTART;VALUE=DATE-TIME:20150415T070000Z
DTEND;VALUE=DATE-TIME:20150415T074000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74417@agenda.infn.it
DESCRIPTION:Speakers: Charlotte Kristjansen ()\nhttps://agenda.infn.it/eve
nt/8572/contributions/74417/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74417/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Behind the geon horizon
DTSTART;VALUE=DATE-TIME:20150417T130000Z
DTEND;VALUE=DATE-TIME:20150417T134000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74416@agenda.infn.it
DESCRIPTION:Speakers: Monica Guica ()\nWe explore the Papadodimas-Raju pre
scription for reconstructing the region behind the horizon of one-sided bl
ack holes in AdS/CFT in the case of the RP^2 geon - a simple\, analytic ex
ample of a single-sided\, asymptotically AdS_3 black hole\, which correspo
nds to a pure CFT state that thermalises at late times. We show that in th
is specific example\, the mirror operators involved in the reconstruction
of the interior have a particularly simple form: the mirror of a single tr
ace operator at late times is just the corresponding single trace operator
at early times. We use some explicit examples to explore how changes in t
he state modify the geometry inside the horizon.\n\nhttps://agenda.infn.it
/event/8572/contributions/74416/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74416/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Position space analysis of the AdS (in)stability problem
DTSTART;VALUE=DATE-TIME:20150417T134000Z
DTEND;VALUE=DATE-TIME:20150417T141000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74415@agenda.infn.it
DESCRIPTION:Speakers: Matthew Lippert ()\nWe investigate whether arbitrari
ly small perturbations in global AdS space are generically unstable and co
llapse into black holes on the time scale set by gravi- tational interacti
ons. We argue that current evidence\, combined with our analysis\, strongl
y suggests that a set of nonzero measure in the space of initial condition
s does not collapse on this time scale. On the other hand\, existing resul
ts do not provide an equally strong indication whether the unstable soluti
ons also form a set of nonzero mea- sure. We perform an analysis in positi
on space to address this puzzle\, and our formalism allows us to directly
address the vanishing-amplitude limit. We show that gravitational self-int
eraction leads to tidal deformations which are equally likely to focus or
defocus energy\, and we sketch the phase diagram accordingly. We also clar
ify the connection between gravitational evolution in global AdS and holog
raphic thermalization.\n\nhttps://agenda.infn.it/event/8572/contributions/
74415/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74415/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Is the composite fermion a Dirac particle?
DTSTART;VALUE=DATE-TIME:20150415T074000Z
DTEND;VALUE=DATE-TIME:20150415T082000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74414@agenda.infn.it
DESCRIPTION:Speakers: Dam Thanh Son ()\nThe theory of the fractional quant
um Hall effect is based on the notion of the composite fermion\, which is
the low-energy quasiparticle for filling factor close to 1/2. I will show
that the particle-hole symmetry of the half-filled Landau level implies th
at the composite fermion is a Dirac particle\, characterized by a Berry ph
ase of $pi$ around the Fermi surface. Physical consequences are discussed
.\n\nhttps://agenda.infn.it/event/8572/contributions/74414/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74414/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Equilibration rates in a strongly coupled nonconformal quark-gluon
plasma
DTSTART;VALUE=DATE-TIME:20150416T130000Z
DTEND;VALUE=DATE-TIME:20150416T134000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74413@agenda.infn.it
DESCRIPTION:Speakers: Alex Buchel ()\nWe study of equilibration rates of s
trongly coupled quark-gluon plasmas in the absence of conformal symmetry.
We primarily consider a supersymmetric mass deformation within N}=2^* gaug
e theory and use holography to compute quasinormal modes of a variety of s
calar operators\, as well as the energy-momentum tensor. In each case\, th
e lowest quasinormal frequency\, which provides an approximate upper bound
on the thermalization time\, is proportional to temperature\, up to a pre
-factor with only a mild temperature dependence. We find similar behaviour
in other holographic plasmas\, where the model contains an additional sca
le beyond the temperature. Hence\, our study suggests that the thermalizat
ion time is generically set by the temperature\, irrespective of any other
scales\, in strongly coupled gauge theories.\n\nhttps://agenda.infn.it/ev
ent/8572/contributions/74413/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74413/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic Kondo defects and universality in holographic supercon
ductors with broken translation symmetry
DTSTART;VALUE=DATE-TIME:20150416T144000Z
DTEND;VALUE=DATE-TIME:20150416T151000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74412@agenda.infn.it
DESCRIPTION:Speakers: Johanna Erdmenger ()\nFor a recently established hol
ographic model of a magnetic impurity coupled to a strongly interacting sy
stem\, we consider quantum quenches as well as the entanglement entropy. B
oth provide information about the size and formation of the Kondo cloud wh
ich screens the impurity. As a second topic\, I will present recent result
s on universal behaviour in a family of holographic s-wave superconductors
obtained by adding a scalar field to translation-breaking gravity backgro
unds with Bianchi VII symmetry.\n\nhttps://agenda.infn.it/event/8572/contr
ibutions/74412/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74412/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Light-Front Holography and New Advances in Nonperturbative QCD
DTSTART;VALUE=DATE-TIME:20150413T154000Z
DTEND;VALUE=DATE-TIME:20150413T161000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74411@agenda.infn.it
DESCRIPTION:Speakers: Stanley Brodsky ()\nOne of the most fundamental prob
lems in Quantum Chromodynamics is to understand the origin of the mass sca
le which controls the range of color confinement and the hadronic spectrum
. We show that a mass gap and a fundamental color confinement scale arise
when one extends the formalism of de Alfaro\, Fubini and Furlan to frame-i
ndependent light-front Hamiltonian theory. Remarkably\, the resulting ligh
t-front potential has a unique form of a harmonic oscillator in the light-
front invariant impact variable if one requires that the action remains co
nformally invariant. The result is a single-variable relativistic equation
of motion for qq¯ bound states\, a "Light-Front Shr\\"odinger Equation"\
, analogous to the nonrelativistic radial Schr\\"odinger equation\, which
incorporates color confinement and other essential spectroscopic and dynam
ical features of hadron physics\, including a massless pion for zero quark
mass and linear Regge trajectories with the same slope in the radial quan
tum number and orbital angular momentum. The same equations with the corre
ct hadron spin dependence arise from the holographic mapping of modified A
dS5 space with a specific dilaton profile. A fundamental mass parameter ?
appears\, determining the hadron masses and the length scale which underli
es hadron structure. Quark masses can be introduced to account for the spe
ctrum of strange hadrons. This Light-Front Holographic approach predicts n
ot only hadron spectroscopy successfully\, but also hadronic form factors\
, the QCD running coupling at small virtuality\, and the light-front wavef
unctions of hadrons. Thus the combination of light-front dynamics\, its ho
lographic mapping to gravity in a higher-dimensional space and the dAFF pr
ocedure provides new insight into the physics underlying color confinement
\, chiral invariance\, and the QCD mass scale.\n\nhttps://agenda.infn.it/e
vent/8572/contributions/74411/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74411/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quark mass in backreacted holographic QCD
DTSTART;VALUE=DATE-TIME:20150413T144000Z
DTEND;VALUE=DATE-TIME:20150413T151000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74410@agenda.infn.it
DESCRIPTION:Speakers: Matti Jarvinen ()\nQCD has an interesting dependence
on the quark mass\, in particular near the edge of the conformal window a
t large N_f. This can be studied by using holographic bottom-up models for
QCD in the Veneziano limit (V-QCD) where the flavor fully backreacts to t
he glue. I will sketch the phase diagram as a function of the quark mass a
nd x=N_f/N_c\, and discuss phenomena such as the hyperscaling relations of
the meson masses and the discontinuity of the S-parameter in the conforma
l window. I will show how the phase diagram in the presence of a double tr
ace deformation ~(\\bar q q)^2 is obtained.\n\nhttps://agenda.infn.it/even
t/8572/contributions/74410/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74410/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nuclear shadowing in the holographic framework
DTSTART;VALUE=DATE-TIME:20150413T151000Z
DTEND;VALUE=DATE-TIME:20150413T154000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74409@agenda.infn.it
DESCRIPTION:Speakers: Pietro Colangelo ()\nhttps://agenda.infn.it/event/85
72/contributions/74409/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74409/
END:VEVENT
BEGIN:VEVENT
SUMMARY:BPS Wilson loops and an exact result for the Bremsstrahlung functi
on in ABJM model
DTSTART;VALUE=DATE-TIME:20150414T095000Z
DTEND;VALUE=DATE-TIME:20150414T102000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74408@agenda.infn.it
DESCRIPTION:Speakers: Silvia Penati ()\nWe discuss results and quantum pro
perties of a family of generalized fermionic Wilson loops in ABJ(M) theory
. We propose an all-order prescription for computing the Bremsstrahlung fu
nction associated to the 1/2-BPS cusp in terms of this family of WL. The v
alidity of this prescription is a non-trivial test of the AdS4/CFT3 corres
pondence.\n\nhttps://agenda.infn.it/event/8572/contributions/74408/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74408/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Spin Matrix theory as a model for the AdS/CFT correspondence
DTSTART;VALUE=DATE-TIME:20150417T151000Z
DTEND;VALUE=DATE-TIME:20150417T154000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74407@agenda.infn.it
DESCRIPTION:Speakers: Troels Harmark ()\nWe introduce a new type of quantu
m mechanical theory called Spin Matrix theory. It is a generalization of n
earest-neighbor spin chain theories. We show that Spin Matrix theory arise
from N=4 super Yang-Mills theory near certain zero-temperature critical p
oints. We find that Spin Matrix theory contains a variety of phases that m
imics that of the AdS/CFT correspondence\, and hence gives a quantum mecha
nical model of the AdS/CFT correspondence. Finally\, we suggest that Spin
Matrix theory by itself can describe a Holographic correspondence.\n\nhttp
s://agenda.infn.it/event/8572/contributions/74407/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74407/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Torsional Newton-Cartan geometry in Lifshitz holography and non-re
lativistic field theories
DTSTART;VALUE=DATE-TIME:20150417T085000Z
DTEND;VALUE=DATE-TIME:20150417T092000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74406@agenda.infn.it
DESCRIPTION:Speakers: Niels Obers ()\nI will discuss recent progress in un
derstanding Lifshitz holography\, including the appearance of torsional Ne
wton-Cartan geometry on the boundary. The coupling of non-relativistic fie
ld theories to such a geometry will be cosnidered\, along with the corresp
onding symmetry structure for the case of a flat Newton-Cartan background.
We will show that\, depending on the details of the action\, such actions
can have various degrees of global space-time symmetries ranging from Lif
shitz to Schroedinger. On the holographic side\, we show that the Lifshitz
vacuum is the perfect dual of flat Newton-Cartan spacetime\, exhibiting t
he same symmetries.\n\nhttps://agenda.infn.it/event/8572/contributions/744
06/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74406/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A menagerie of non-relativistic physics
DTSTART;VALUE=DATE-TIME:20150414T092000Z
DTEND;VALUE=DATE-TIME:20150414T095000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74405@agenda.infn.it
DESCRIPTION:Speakers: Kristan Jensen ()\nSpacetime symmetries lead to non-
perturbative constraints on transport\, like the Einstein relation between
electric and thermal conductivity. I will discuss some recent progress in
the understanding of the spacetime symmetries of non-relativistic systems
\, like the quantum and anomalous Hall effects\, as well as the correspond
ing implications for transport. Unexpectedly\, these results also shed lig
ht on so-called warped CFTs in two dimensions — a sort of chiral\, non-L
orentz-invariant (and so non-relativistic) CFT — which are motivated by
string theory but have remained mysterious.\n\nhttps://agenda.infn.it/even
t/8572/contributions/74405/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74405/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Holographic Goldstino
DTSTART;VALUE=DATE-TIME:20150413T130000Z
DTEND;VALUE=DATE-TIME:20150413T134000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74404@agenda.infn.it
DESCRIPTION:Speakers: Matteo Bertolini ()\nWe find the fingerprints of the
Goldstino associated to spontaneous supersymmetry breaking at strong coup
ling\, using holography. The Goldstino massless pole arises in two-point c
orrelators of the supercurrent\, due to contact terms in supersymmetry War
d identities. We show how these contact terms are obtained from the hologr
aphic renormalization of the gravitino sector\, independently of the detai
ls of the background solution.\n\nhttps://agenda.infn.it/event/8572/contri
butions/74404/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74404/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Rigid Holography and the 6D (2\,0) CFT on AdS_5*S^1
DTSTART;VALUE=DATE-TIME:20150413T134000Z
DTEND;VALUE=DATE-TIME:20150413T141000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74403@agenda.infn.it
DESCRIPTION:Speakers: Micha Berkooz ()\nField theories on anti-de Sitter (
AdS) space can be studied by realizing them as low-energy limits of AdS va
cua of string/M theory. In an appropriate limit\, the field theories decou
ple from the rest of string/M theory. Since these vacua are dual to confor
mal field theories\, this relates some of the observables of these field t
heories on anti-de Sitter space to a subsector of the dual conformal field
theories. We exemplify this `rigid holography' by studying in detail the
six-dimensional ${\\cal N}=(2\,0)$ $A_{K-1}$ superconformal field theory (
SCFT) on $AdS_5\\times \\mathbb{S}^1$\, with equal radii for $AdS_5$ and f
or $\\mathbb{S}^1$. We choose specific boundary conditions preserving sixt
een supercharges that arise when this theory is embedded into Type IIB str
ing theory on $AdS_5\\times \\mathbb{S}^5 / \\mathbb{Z}_K$. On $\\mathbb{R
}^{4\,1}\\times \\mathbb{S}^1$\, this six-dimensional theory has a $5(K-1)
$-dimensional moduli space\, with unbroken five-dimensional $SU(K)$ gauge
symmetry at (and only at) the origin. On $AdS_5\\times \\mathbb{S}^1$\, th
e theory has a $2(K-1)$-dimensional `moduli space' of supersymmetric confi
gurations. We argue that in this case the $SU(K)$ gauge symmetry is unbrok
en everywhere in the `moduli space' and that this five-dimensional gauge t
heory is coupled to a four-dimensional theory on the boundary of $AdS_5$ w
hose coupling constants depend on the `moduli'. This involves non-standard
boundary conditions for the gauge fields on $AdS_5$. Near the origin of t
he `moduli space'\, the theory on the boundary contains a weakly coupled f
our-dimensional ${\\cal N}=2$ supersymmetric $SU(K)$ gauge theory. We show
that this implies large corrections to the metric on the `moduli space'.
The embedding in string theory implies that the six-dimensional ${\\cal N}
=(2\,0)$ theory on $AdS_5\\times \\mathbb{S}^1$ with sources on the bounda
ry is a subsector of the large $N$ limit of various four-dimensional ${\\c
al N}=2$ quiver SCFTs that remains non-trivial in the large $N$ limit. The
same subsector appears universally in many different four-dimensional ${\
\cal N}=2$ SCFTs. We also discuss a decoupling limit that leads to ${\\ca
l N}=(2\,0)$ `little string theories' on $AdS_5\\times \\mathbb{S}^1$.\n\n
https://agenda.infn.it/event/8572/contributions/74403/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74403/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entanglement entropy associated to a far-from-equilibrium energy f
low
DTSTART;VALUE=DATE-TIME:20150415T122000Z
DTEND;VALUE=DATE-TIME:20150415T125000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74402@agenda.infn.it
DESCRIPTION:Speakers: Daniel Fernandez ()\nThe time evolution of the energ
y transport triggered in a strongly coupled quantum critical system by a t
emperature gradient is holographically related to the evolution of an asym
ptotically AdS black brane with a gradient in its planar horizon. A releva
nt observable that provides physical insight about the evolution of this s
ystem and the eventual formation of a steady state is the entanglement ent
ropy. In this talk\, I will present an overview of this problem\, along wi
th results for the entanglement entropy in the regime where the difference
in temperatures is small.\n\nhttps://agenda.infn.it/event/8572/contributi
ons/74402/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
A
URL:https://agenda.infn.it/event/8572/contributions/74402/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Monopoles and magnetic oscillations in holographic liquids
DTSTART;VALUE=DATE-TIME:20150415T092000Z
DTEND;VALUE=DATE-TIME:20150415T095000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74401@agenda.infn.it
DESCRIPTION:Speakers: Valentina Giangreco Puletti ()\nWe study monopoles a
nd the role of magnetic field in holographic models of compressible phases
of quantum matter\, both from a bottom-up and a top-down approach. The fo
rmer extends previous electron star models to include a magnetic field at
finite temperature\, while the latter is based on D-brane constructions. I
will present these models and their most interesting features\, such as q
uantum oscillations which differ from those predicted by Fermi liquid theo
ry.\n\nhttps://agenda.infn.it/event/8572/contributions/74401/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74401/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fermi gas formulation for D-type quivers
DTSTART;VALUE=DATE-TIME:20150415T142000Z
DTEND;VALUE=DATE-TIME:20150415T145000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74400@agenda.infn.it
DESCRIPTION:Speakers: Benjamin Assel ()\nI will explain that the exact par
tition function of D-type N=4 quivers SCFTs on a three-sphere coincides wi
th the partition function of a gas of free fermions in one dimension with
a non-standard Hamiltonian. I will describe briefly the mirror dual quiver
theories and show that mirror symmetry is expressed as a simple canonical
transformation on the density operator of the quantum mechanics. Finally
I will discuss the exact evaluation of the perturbative part of the free e
nergy for these theories\, which takes the form an Airy function\, and emp
hasize the perspectives for holography.\n\nhttps://agenda.infn.it/event/85
72/contributions/74400/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74400/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Scale vs. Conformal Invariance in Holography with Higher Derivativ
e Corrections
DTSTART;VALUE=DATE-TIME:20150415T145000Z
DTEND;VALUE=DATE-TIME:20150415T152000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74399@agenda.infn.it
DESCRIPTION:Speakers: Yegor Korovin ()\nGravitational theories with higher
derivative corrections in AdS are dual to non-unitary QFTs. In particular
\, these may provide holographic examples of scale but not conformally inv
ariant field theories (SFT). A distinct signature of a SFT is the non-vani
shing scale anomaly R^2\, which may be computed holographically. We perfor
m a systematic near-boundary analysis of relevant gravitational theories.
Generically the R^2 anomaly is not present. However we identify a very spe
cial class of theories (e.g. Chern-Simons gravity in 5d) with non-standard
near-boundary behaviour. For these theories the R^2 anomaly may be presen
t.\n\nhttps://agenda.infn.it/event/8572/contributions/74399/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74399/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Spontaneous Breaking of U(N) symmetry in invariant Matrix Models
DTSTART;VALUE=DATE-TIME:20150415T152000Z
DTEND;VALUE=DATE-TIME:20150415T155000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74398@agenda.infn.it
DESCRIPTION:Speakers: Fabio Franchini ()\nMatrix Models have a strong hist
ory of success in describing a variety of situations\, from nuclei spectra
to conduction in mesoscopic systems\, from strongly interacting systems t
o various aspects of mathematical physics\, from holographic models to sup
ersymmetric theories in the localization limit. Traditionally\, the requir
ement of base invariance has lead to a factorization of the eigenvalue and
eigenvector distribution and\, in turn\, to the conclusion that invariant
models describe extended systems.\nMoreover\, Wigner-Dyson statistics for
the eigenvalues is a hallmark of eigenvector delocalization. Thus\, in vi
rtually all applications of matrix models\, eigenvectors are discarded and
one considers just the eigenvalues. We show that deviations of the eigenv
alue statistics from the Wigner-Dyson universality reflects itself on the
eigenvector distribution and that a gap in the eigenvalue density breaks t
he U(N) symmetry to a smaller one. Moreover\, this spontaneous symmetry br
eaking means that egeinvectors become localized and that the system looses
ergodicity and that the system has lost replica symmetry invariance.\nWe
also consider models with log-normal weight\, such as those emerging in Ch
ern-Simons and ABJM theories. Their eigenvalue distribution is intermediat
e between Wigner-Dyson and Poissonian\, which candidates these models for
describing a system intermediate between the extended and localized phase.
We show that they have a much richer energy landscape than expected\, wit
h their partition functions decomposable in a large number of equilibrium
configurations\, growing exponentially with the matrix rank. We argue that
this structure is a reflection of the non-trivial (multi-fractal) eigenve
ctor statistics.\n\nhttps://agenda.infn.it/event/8572/contributions/74398/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
A
URL:https://agenda.infn.it/event/8572/contributions/74398/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Transport in holographic systems with momentum dissipation
DTSTART;VALUE=DATE-TIME:20150413T074000Z
DTEND;VALUE=DATE-TIME:20150413T082000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74397@agenda.infn.it
DESCRIPTION:Speakers: Richard Davison ()\nGauge/gravity duality can be use
d to study the transport properties of strongly interacting systems with n
o quasiparticles. I will give an overview of some holographic toy models o
f states like this\, in which momentum is not conserved and thus the trans
port of energy and charge is non-trivial. I will describe how the transpor
t properties of the most basic such example can be understood in terms of
two simple\, non-holographic\, effective theories\, one of which is valid
when momentum dissipates slowly and one when it dissipates quickly.\n\nhtt
ps://agenda.infn.it/event/8572/contributions/74397/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74397/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Twisted index of 3d gauge theories
DTSTART;VALUE=DATE-TIME:20150414T085000Z
DTEND;VALUE=DATE-TIME:20150414T092000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74396@agenda.infn.it
DESCRIPTION:Speakers: Alberto Zaffaroni ()\nWe discuss general results for
a generalized twisted partition function of 3d gauge theories on S^2 X S^
1 which are relevant for the holographic interpretation of supersymmetric
AdS4 black holes.\n\nhttps://agenda.infn.it/event/8572/contributions/74396
/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74396/
END:VEVENT
BEGIN:VEVENT
SUMMARY:How far can we push the AdS/Ricci-flat correspondence?
DTSTART;VALUE=DATE-TIME:20150417T092000Z
DTEND;VALUE=DATE-TIME:20150417T095000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74395@agenda.infn.it
DESCRIPTION:Speakers: Marco Caldarelli ()\nThe AdS/RF correspondence conne
cts classes of Ricci-flat spacetimes to asymptotically anti-de Sitter spac
etimes\, and thus endows these vacuum gravity solutions with a generalized
conformal symmetry and a holographic structure\, both inherited from AdS.
The precise map requires however the dimensional reduction over a round s
phere\, and is therefore unsuitable to gain insights into asymptotically f
lat spacetimes\, such as the Schwarzschild black hole. In this talk\, I wi
ll explore the possibility of circumventing this limitation and to extend
the correspondence to more general classes of spacetimes.\n\nhttps://agend
a.infn.it/event/8572/contributions/74395/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74395/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Supersymmetric AdS(5) solutions of massive type IIA supergravity
DTSTART;VALUE=DATE-TIME:20150414T102000Z
DTEND;VALUE=DATE-TIME:20150414T105000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74394@agenda.infn.it
DESCRIPTION:Speakers: Achilleas Passias ()\nWe discuss the classification
of generic N = 1 supersymmetric AdS(5) x M solutions of massive type IIA
supergravity and the discovery of new analytic ones. The necessary and suf
ficient conditions for supersymmetry amount to a system of differential c
onditions on a local identity structure on M. Known AdS(5) solutions of t
ype IIA supergravity are reproduced by the latter. Upon making further as
sumptions\, the system reduces to an ODE whose analytic solution yields ne
w AdS(5) backgrounds with non-zero Romans mass\; M is topologically a thr
ee-sphere fibered over a Riemann surface of negative curvature. The holog
raphically dual 4d SCFTs conjecturally arise by compactifying 6d (1\,0) SC
FTs on a Riemann surface.\n\nhttps://agenda.infn.it/event/8572/contributio
ns/74394/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74394/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Analogue holographic correspondence in optical metamaterials
DTSTART;VALUE=DATE-TIME:20150414T152000Z
DTEND;VALUE=DATE-TIME:20150414T155000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74393@agenda.infn.it
DESCRIPTION:Speakers: Dmitri Khveschenko ()\nWe assess the prospects of us
ing optical metamaterials for simulating various aspects of analogue gravi
ty and holographic correspondence. Albeit requiring a careful engineering
of the dielectric media\, some hallmark features reminiscent of the conjec
tured 'generalized' (non-AdS/non-CFT) holography can be detected by measur
ing non-local optical field correlations. The possibility of such simulate
d behavior might also shed light on the nature of certain ostensibly holog
raphic phenomena in the condensed matter\, optical\, and AMO systems with
emergent effective metrics which may not\, in fact\, require any reference
to the original string-theoretical holography.\n\nhttps://agenda.infn.it/
event/8572/contributions/74393/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74393/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Welcome
DTSTART;VALUE=DATE-TIME:20150413T065500Z
DTEND;VALUE=DATE-TIME:20150413T070000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74392@agenda.infn.it
DESCRIPTION:Speakers: Nick Evans ()\nhttps://agenda.infn.it/event/8572/con
tributions/74392/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74392/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Generalized Global Symmetries
DTSTART;VALUE=DATE-TIME:20150413T122000Z
DTEND;VALUE=DATE-TIME:20150413T130000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74391@agenda.infn.it
DESCRIPTION:Speakers: Nathan Seiberg ()\nWe will discuss in a systematic w
ay a generalization of ordinary global symmetries\, whose charged operator
s are line operators\, surface operators\, etc.\, and whose charged excita
tions are strings\, membranes\, etc. Many of the properties of ordinary gl
obal symmetries apply here. They lead to Ward identities and hence to sele
ction rules on amplitudes. Such global symmetries can be coupled to classi
cal background fields and they can be gauged by summing over these classic
al fields. These generalized global symmetries can be spontaneously broken
(either completely or to a subgroup). They can also have ’t Hooft anoma
lies\, which prevent us from gauging them\, but lead to ’t Hooft anomaly
matching conditions. Such anomalies can also lead to anomaly inflow on va
rious defects and exotic Symmetry Protected Topological phases. Our analys
is of these symmetries gives a new unified perspective of many known pheno
mena and uncovers new results.\n\nhttps://agenda.infn.it/event/8572/contri
butions/74391/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74391/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic Charged Impurities
DTSTART;VALUE=DATE-TIME:20150413T092000Z
DTEND;VALUE=DATE-TIME:20150413T095000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74390@agenda.infn.it
DESCRIPTION:Speakers: Daniel Arean ()\nI will study the effect of charged
impurities on holographic superconductors and brane intersections. Interes
tingly\, for the former setup one can observe that for long enough system
size the noise suppress superconductivity. I will present results for the
conductivity of these disordered systems.\n\nhttps://agenda.infn.it/event/
8572/contributions/74390/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74390/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Electromagnetic properties of charged viscous fluids: from string
theory to electrons
DTSTART;VALUE=DATE-TIME:20150413T095000Z
DTEND;VALUE=DATE-TIME:20150413T102000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74389@agenda.infn.it
DESCRIPTION:Speakers: Davide Forcella ()\nhttps://agenda.infn.it/event/857
2/contributions/74389/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74389/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A more realistic thermalization scenario in holography
DTSTART;VALUE=DATE-TIME:20150416T134000Z
DTEND;VALUE=DATE-TIME:20150416T141000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74388@agenda.infn.it
DESCRIPTION:Speakers: Koenraad Schalm ()\nHolography has provided a brand
new window on the thermalization of Yang-Mills plasmas. Compared to data f
rom Relavistic Heavy Ion Collisions\, holographic computations tend to (1)
have a shorter thermalization time scale\, (2) permit a linearized descri
ption in terms of quasinormal modes already at extremely early stages rath
er than close to the final configuration\, (3) thermalize less from the IR
up than one would infer from weakly coupled field theories. We will argue
in particular that the holographic linearized quasinormal description is
an artefact of the large N limit\, and that 1/N corrections should make th
e system more realistic. We test this by introducing an additional decay o
f the quasinormal modes to each other. Our results show that this diminish
es the three discordances between holographic thermalization and experimen
t.\n\nhttps://agenda.infn.it/event/8572/contributions/74388/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74388/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Disorder in AdS/CFT
DTSTART;VALUE=DATE-TIME:20150413T085000Z
DTEND;VALUE=DATE-TIME:20150413T092000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74387@agenda.infn.it
DESCRIPTION:Speakers: Leopoldo Pando Zayas ()\nhttps://agenda.infn.it/even
t/8572/contributions/74387/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74387/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Membrane Paradigm at large D
DTSTART;VALUE=DATE-TIME:20150414T070000Z
DTEND;VALUE=DATE-TIME:20150414T074000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74386@agenda.infn.it
DESCRIPTION:Speakers: Shiraz Minwalla ()\nhttps://agenda.infn.it/event/857
2/contributions/74386/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74386/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entanglement Entropy and Boundary Terms: Two Short Stories
DTSTART;VALUE=DATE-TIME:20150414T074000Z
DTEND;VALUE=DATE-TIME:20150414T082000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74385@agenda.infn.it
DESCRIPTION:Speakers: Christopher Herzog ()\nConformal transformations to
hyperbolic space are a useful tool for calculating entanglement entropies
in conformal field theories. I will use this tool to calculate thermal cor
rections to entanglement entropy for conformal field theories on spheres.
I will also consider the universal log contribution to the entanglement en
tropy for CFTs in even dimensional flat space. In both cases\, we will see
the crucial role played by boundary terms.\n\nhttps://agenda.infn.it/even
t/8572/contributions/74385/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74385/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Electric fields and quantum wormholes
DTSTART;VALUE=DATE-TIME:20150413T070000Z
DTEND;VALUE=DATE-TIME:20150413T074000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74384@agenda.infn.it
DESCRIPTION:Speakers: Nabil Iqbal ()\nA classical Einstein-Rosen bridge ch
anges the topology of spacetime\, allowing (for example) electric field li
nes to penetrate it. It has recently been suggested that in the bulk of a
theory of quantum gravity\, the quantum entanglement of ordinary perturbat
ive quanta should be viewed as creating a quantum version of an Einstein-R
osen bridge between the quanta\, or a “quantum wormhole”. For this “
ER=EPR” correspondence to make sense it then seems necessary for a quant
um wormhole to allow (for example) electric field lines to penetrate it. I
will discuss (within low-energy effective field theory) whether or not th
is happens.\n\nhttps://agenda.infn.it/event/8572/contributions/74384/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74384/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Superconformal Quantum Mechanics and Emerging Holographic QCD
DTSTART;VALUE=DATE-TIME:20150414T122000Z
DTEND;VALUE=DATE-TIME:20150414T125000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74383@agenda.infn.it
DESCRIPTION:Speakers: Guy De Teramond ()\nThe observed light-hadron spectr
um will be described from a superconformal semiclassical approximation to
light-front QCD and its embedding in AdS space. This procedure uniquely d
etermines the confinement potential for arbitrary spin. To this end\, we w
ill show that wave equations in AdS space are dual to light-front supersym
metric quantum mechanical bound-state equations in physical space-time. Th
e specific breaking of dilatation invariance within the supersymetric alge
bra explains hadronic properties common to light mesons and baryons\, suc
h as the observed mass pattern in the radial and orbital excitations\, as
well as their distinctive and systematic features. Furthermore\, the gener
alized supercharges connect the baryon and meson spectra. The lowest-lying
state\, the the pi-meson\, is massless in the chiral limit and has no sup
ersymmetric partner. Preliminary results extending the supersymmetric rela
tions across the heavy-light hadronic spectrum will also be presented.\n\n
https://agenda.infn.it/event/8572/contributions/74383/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74383/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Horava-Lifshitz Gravity from Dynamical Newton-Cartan Geometry
DTSTART;VALUE=DATE-TIME:20150414T152000Z
DTEND;VALUE=DATE-TIME:20150414T155000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74382@agenda.infn.it
DESCRIPTION:Speakers: Jelle Hartong ()\nIt will be shown that (non-)projec
table Horava-Lifshitz gravity and the dynamics of (twistless torsional) Ne
wton-Cartan geometry are one and the same thing.\n\nhttps://agenda.infn.it
/event/8572/contributions/74382/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74382/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic topological entanglement entropy and ground state dege
neracy
DTSTART;VALUE=DATE-TIME:20150416T102000Z
DTEND;VALUE=DATE-TIME:20150416T105000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74381@agenda.infn.it
DESCRIPTION:Speakers: Andrei Parnachev ()\nTopological entanglement entrop
y\, a measure of the long-ranged entanglement\, is related to the degenera
cy of the ground state on a higher genus surface. We construct a class of
holographic models where such relation is similar to the one exhibited by
Chern-Simons theory in a certain large N limit. Both the non-vanishing top
ological entanglement entropy and the ground state degeneracy in these hol
ographic models are consequences of the topological Gauss-Bonnet term in t
he dual gravitational description.\n\nhttps://agenda.infn.it/event/8572/co
ntributions/74381/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74381/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Chaos in the matrix model\, and formation and evaporation of a bla
ck hole
DTSTART;VALUE=DATE-TIME:20150416T095000Z
DTEND;VALUE=DATE-TIME:20150416T102000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74380@agenda.infn.it
DESCRIPTION:Speakers: Masanori Hanada ()\nWe study real-time evolution of
a highly stringy regime of the BFSS matrix model by using a numerical meth
od. We demonstrate that several important properties of a black hole\, suc
h as the fast scrambling and evaporation\, can be seen\, just by following
classical time evolution of the matrix model.\n\nhttps://agenda.infn.it/e
vent/8572/contributions/74380/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74380/
END:VEVENT
BEGIN:VEVENT
SUMMARY:AdS black hole thermodynamics with scalar hair
DTSTART;VALUE=DATE-TIME:20150417T095000Z
DTEND;VALUE=DATE-TIME:20150417T102000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74379@agenda.infn.it
DESCRIPTION:Speakers: Ioannis Papadimitriou ()\nI will discuss the thermod
ynamics of asymptotically AdS black holes with scalar hair whose mass lies
in the window allowing mixed (multi-trace) boundary conditions. Such boun
dary conditions on the scalars require a careful definition of the asympto
tic charges\, but the first law and other thermodynamic properties continu
e to hold in their usual form.\n\nhttps://agenda.infn.it/event/8572/contri
butions/74379/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74379/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic Superconductors in Helical Backgrounds and Homes' Rela
tion
DTSTART;VALUE=DATE-TIME:20150414T142000Z
DTEND;VALUE=DATE-TIME:20150414T145000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74378@agenda.infn.it
DESCRIPTION:Speakers: Rene Meyer ()\nWe present results on a holographic s
-wave superconductor in a helically symmetric Bianchi VII symmetric space-
time\, and discuss the validity of Homes' law in this system. We determine
the phase diagram in terms of the helix parameters\, and the AC conductiv
ity of the different phases. We in particular show that Homes' relation ho
lds for an regime of intermediary momentum relaxation strength. For both w
eak and very strong lattice perturbations\, i.e. weak and strong momentum
dissipation\, Homes' relation is violated.\n\nhttps://agenda.infn.it/event
/8572/contributions/74378/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74378/
END:VEVENT
BEGIN:VEVENT
SUMMARY:From strange metals to black holes and back: effective theories of
thermoelectric transport
DTSTART;VALUE=DATE-TIME:20150417T102000Z
DTEND;VALUE=DATE-TIME:20150417T105000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74377@agenda.infn.it
DESCRIPTION:Speakers: Blaise Gouteraux ()\nWhat can Gauge/Gravity duality
teach us about Condensed Matter physics? While the search goes on for grav
itational duals to strange metals and other strongly-coupled Condensed Mat
ter systems\, I'll discuss two specific examples where holographic computa
tions have allowed us to formulate effective theories of thermoelectric tr
ansport\, the existence of which does not rely on holography or long-lived
Landau quasiparticles. One is a scaling theory of thermal quantum critica
l transport\, the other a theory of 'hydrodynamics' without conserved mome
ntum.\n\nhttps://agenda.infn.it/event/8572/contributions/74377/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74377/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On Holographic Insulators and Supersolids
DTSTART;VALUE=DATE-TIME:20150414T145000Z
DTEND;VALUE=DATE-TIME:20150414T152000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74376@agenda.infn.it
DESCRIPTION:Speakers: Jie Ren ()\nWe find holographic insulators and super
conductors with a hard gap and a discrete spectrum\, from an Einstein-Maxw
ell-scalar system in a fractionalized phase. The ground state of the syste
m has a hyperscaling violating geometry in the IR. We break the translatio
nal invariance by adding massless scalar fields responsible for momentum d
issipation.\n\nhttps://agenda.infn.it/event/8572/contributions/74376/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74376/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic entanglement entropy in excited states from 2d CFT
DTSTART;VALUE=DATE-TIME:20150416T074000Z
DTEND;VALUE=DATE-TIME:20150416T082000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74375@agenda.infn.it
DESCRIPTION:Speakers: Alice Bernamonti ()\nI will consider the entanglemen
t entropy in 2d conformal field theory in a class of excited states produc
ed by the insertion of a heavy local operator. I will discuss the universa
l contribution from the stress tensor to the single interval entanglement
entropy\, and conjecture that this dominates the answer in theories with a
large central charge and a sparse spectrum of low-dimension operators. Th
e resulting entanglement entropy agrees precisely with holographic calcula
tions in three-dimensional gravity. I will illustrate this in two examples
: high-energy eigenstates of the Hamiltonian and local quenches.\n\nhttps:
//agenda.infn.it/event/8572/contributions/74375/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74375/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic three-dimensional YM with compressible matter
DTSTART;VALUE=DATE-TIME:20150414T132000Z
DTEND;VALUE=DATE-TIME:20150414T135000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74374@agenda.infn.it
DESCRIPTION:Speakers: Anton Faedo ()\nWe present the holographic dual of s
trongly coupled\, three-dimensional Yang-Mills theories with massless flav
our in the Veneziano limit at finite quark density. The fundamental degree
s of freedom are modelled by a distribution of D6-branes backreacting the
geometry of a stack of colour D2-branes. A finite chemical potential corre
sponds to the time component of a gauge field living on the flavour branes
. We discuss the RG flows triggered by the presence of the charge density
and argue that generically the IR is governed by a fixed point with partic
ular scaling properties. We finally comment on interesting observables sen
sible to the different regimes of the system.\n\nhttps://agenda.infn.it/ev
ent/8572/contributions/74374/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74374/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum quenches & holography
DTSTART;VALUE=DATE-TIME:20150416T070000Z
DTEND;VALUE=DATE-TIME:20150416T074000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74373@agenda.infn.it
DESCRIPTION:Speakers: Robert Myers ()\nWe study quantum quenches in a holo
graphic framework\, where the quenches involve varying the coupling of a r
elevant operator in the boundary theory. The time dependence of the new co
upling is characterized by a transition time and the observables exhibit a
universal scaling behaviour when this timescale becomes the smallest scal
e in the problem. The same scaling behaviour is found for mass quenches in
free field theories and we argue that\, in fact\, it will apply for any t
heory which flows from a ultraviolet fixed point.\n\nhttps://agenda.infn.i
t/event/8572/contributions/74373/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74373/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic Charge Oscillations
DTSTART;VALUE=DATE-TIME:20150414T125000Z
DTEND;VALUE=DATE-TIME:20150414T132000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74372@agenda.infn.it
DESCRIPTION:Speakers: Mike Blake ()\nThe Reissner-Nordstrom black hole pro
vides the prototypical description of a holographic system at finite densi
ty. We study the response of this system to the presence of a local\, char
ged impurity. Below a critical temperature\, the induced charge density\,
which screens the impurity\, exhibits oscillations. These oscillations can
be traced to the singularities in the density-density correlation functio
n moving in the complex momentum plane. At finite temperature\, the oscill
ations are very similar to the Friedel oscillations seen in Fermi liquids.
However\, at zero temperature the oscillations in the black hole backgrou
nd remain exponentially damped\, while Friedel oscillations relax to a pow
er-law.\n\nhttps://agenda.infn.it/event/8572/contributions/74372/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74372/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Black brane steady states
DTSTART;VALUE=DATE-TIME:20150416T092000Z
DTEND;VALUE=DATE-TIME:20150416T095000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74371@agenda.infn.it
DESCRIPTION:Speakers: Amos Yarom ()\nWe follow the evolution of an asympto
tically AdS black brane with a fixed temperature gradient at spatial infin
ity until a steady state is formed. The resulting energy density and energ
y flux of the steady state in the boundary theory are compared to a conjec
ture on the behavior of steady states in conformal field theories. Very go
od agreement is found.\n\nhttps://agenda.infn.it/event/8572/contributions/
74371/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74371/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic thermalization and AdS instability
DTSTART;VALUE=DATE-TIME:20150416T085000Z
DTEND;VALUE=DATE-TIME:20150416T092000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74370@agenda.infn.it
DESCRIPTION:Speakers: Ben Craps ()\nI will discuss recent developments in
the study of AdS (in)stability and their relation to holographic thermaliz
ation.\n\nhttps://agenda.infn.it/event/8572/contributions/74370/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74370/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Flux and Hall states in Chern-Simons matter theories with flavor
DTSTART;VALUE=DATE-TIME:20150414T145000Z
DTEND;VALUE=DATE-TIME:20150414T152000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74369@agenda.infn.it
DESCRIPTION:Speakers: Dimitrios Zoakos ()\nhttps://agenda.infn.it/event/85
72/contributions/74369/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74369/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Universal properties of cold holographic matter
DTSTART;VALUE=DATE-TIME:20150414T142000Z
DTEND;VALUE=DATE-TIME:20150414T145000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74368@agenda.infn.it
DESCRIPTION:Speakers: Niko Jokela ()\nI will briefly review the Landau-Fer
mi liquid theory and then discuss the holographic counterpart by modeling
the cold matter in terms of D-brane intersections. I will focus on determi
ning universal properties of these systems and study them at finite temper
ature\, charge density\, and magnetic fields. In particular\, I will prese
nt analytic results for the diffusion constants and the zero sound dispers
ions. Finally\, I will explore the (2+1)-dimensional anyonic liquids.\n\nh
ttps://agenda.infn.it/event/8572/contributions/74368/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74368/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Simple Holographic Superconductor with Momentum Relaxation
DTSTART;VALUE=DATE-TIME:20150417T144000Z
DTEND;VALUE=DATE-TIME:20150417T151000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74367@agenda.infn.it
DESCRIPTION:Speakers: Keun-Young Kim ()\nhttps://agenda.infn.it/event/8572
/contributions/74367/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74367/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic Representation of Bulk Fields and Locality in (A)dS
DTSTART;VALUE=DATE-TIME:20150415T132000Z
DTEND;VALUE=DATE-TIME:20150415T135000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74366@agenda.infn.it
DESCRIPTION:Speakers: Debajyoti Sarkar ()\nThe study of local physics in a
theory of quantum gravity is an important problem. (A)dS/ CFT gives us a
platform to study this issue from the CFT perspective. The construction of
local bulk scalars in semiclassical limit of AdS/ CFT is well-known at or
der by order in 1/N perturbation. Here we discuss the recent developments
on this topic and in particular describe how to extend this program for fi
elds with spin- 1 and higher. We work in both AdS and dS spaces. Local fie
ld construction is also made at arbitrary cut-off surfaces in (A)dS and th
eir prospective connections to holographic RG are explored. Finally we arg
ue about various finite N scenarios and their effects on bulk locality and
black hole information paradox. Based on 1204.0126\, 1408.0415\, 1411.465
7\, 1501.XXXXX and related works.\n\nhttps://agenda.infn.it/event/8572/con
tributions/74366/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74366/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Looking for an on-shell regulator
DTSTART;VALUE=DATE-TIME:20150415T125000Z
DTEND;VALUE=DATE-TIME:20150415T132000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74365@agenda.infn.it
DESCRIPTION:Speakers: Eduardo Conde Pena ()\nA generic QFT without mass ga
p may present IR and UV divergencies\, which must be regularized before ma
king sense of them. In a Feynman diagram\, one thinks of these divergencie
s as arising from an infinite integration region for a certain off-shell m
omentum. When one treats the theory purely on-shell\, these divergencies m
ust be seen (and regularized) in some other way. In this talk I present an
approach to tackle this problem\, in the particular case of divergencies
of scattering amplitudes\, using the so-called on-shell diagrams.\n\nhttps
://agenda.infn.it/event/8572/contributions/74365/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74365/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The local renormalization group equation in superspace
DTSTART;VALUE=DATE-TIME:20150415T122000Z
DTEND;VALUE=DATE-TIME:20150415T125000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74364@agenda.infn.it
DESCRIPTION:Speakers: Roberto Auzzi ()\nThe superspace formulation of the
local renormalization group equation is discussed. This is framework in w
hich the constraints of holomorphy and R-symmetry on supersymmetric RG flo
ws are manifest. Background fields are used to define the super-Weyl symme
try off-criticality and to derive the consistency conditions associated wi
th this symmetry. An analog of the "a-maximization" equation\, which is va
lid off-criticality is introduced. This machinery is also applied to the s
tudy of conformal manifolds and a simple proof is given that the metric on
such manifolds is Kahler.\n\nhttps://agenda.infn.it/event/8572/contributi
ons/74364/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74364/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Electron-Phonon interactions\, MIT and Holographic Massive Gravity
DTSTART;VALUE=DATE-TIME:20150415T145000Z
DTEND;VALUE=DATE-TIME:20150415T152000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74363@agenda.infn.it
DESCRIPTION:Speakers: Matteo Baggioli ()\nMassive gravity is holographical
ly dual to ''realistic'' materials with momentum relaxation. In its fully
covariant formulation it in fact provides an holographic effective descrip
tion for electron-phonon interactions. I will show how phonons' degrees of
freedom are enconded in massive gravity and which are the interesting phe
nomenological features concerning the transport properties of the dual the
ory. In particular non-linear interactions in the phonons-sector can provi
de a metal-insulator crossover and a pinned response in the optical Conduc
tivity.\n\nhttps://agenda.infn.it/event/8572/contributions/74363/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
A
URL:https://agenda.infn.it/event/8572/contributions/74363/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entanglement entropy in a holographic model of the Kondo effect.
DTSTART;VALUE=DATE-TIME:20150415T152000Z
DTEND;VALUE=DATE-TIME:20150415T155000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74362@agenda.infn.it
DESCRIPTION:Speakers: Mario Flory ()\nMy starting point is a holographic m
odel of the Kondo effect recently proposed by Erdmenger et. al.\, i.e. of
a magnetic impurity interacting with a strongly coupled system. Specifical
ly\, I focus on the challenges of computing gravitational backreaction in
this model\, which demands a study of the Israel junction conditions. I pr
esent general results on these junction conditions\, including analytical
solutions for certain toy models\, that may be relevant also more generall
y in the AdS/boundary CFT correspondence. Furthermore\, similar junction c
onditions for a bulk Chern-Simons field appearing in the holographic Kondo
model are discussed. I then focus on the computation and interpretation o
f entanglement entropy in this holographic model.\n\nhttps://agenda.infn.i
t/event/8572/contributions/74362/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74362/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Semiholography\, conductivity and Ward identities
DTSTART;VALUE=DATE-TIME:20150415T102000Z
DTEND;VALUE=DATE-TIME:20150415T105000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74361@agenda.infn.it
DESCRIPTION:Speakers: Umut Gursoy ()\nIn semiholography\, a strongly-coupl
ed conformal field theory with a holographic dual is coupled to another th
eory that is weakly interacting. We show how semiholography is set up in a
ccordance with the Ward identities of the total theory. As an example\, we
charge fermions in the total theory under a U(1) gauge field\, and comput
e the total electrical conductivity and Ward identity corresponding to cha
rge conservation. The resulting conductivity can be expressed in vacuum CF
T correlators which we compute in the dual holographic spacetime. Most imp
ortantly one has to include the 3-point vertex in the curved background fo
r consistency.\n\nhttps://agenda.infn.it/event/8572/contributions/74361/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74361/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thermoelectric Conductivities at Finite Magnetic Field and the Ner
nst effect
DTSTART;VALUE=DATE-TIME:20150415T142000Z
DTEND;VALUE=DATE-TIME:20150415T145000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74360@agenda.infn.it
DESCRIPTION:Speakers: Yunseok Seo ()\nWe study electric\, thermoelectric\,
and thermal conductivities of a strongly correlated system in the presenc
e of magnetic field by gauge/gravity duality. We consider a general class
of Einstein-Maxwell-Dilaton theory with axion fields imposing momentum rel
axation. Analytic general formulas for DC conductivities and the Nernst si
gnal are derived in terms of the black hole horizon data. For an explicit
model study we analyse in detail the dyonic black hole modified by moment
um relaxation. In this model\, the Nernst signal shows a typical vortex-li
quid effect when momentum relaxation effect is comparable to chemical pote
ntial. We compute all AC electric\, thermoelectric\, and thermal conductiv
ities by numerical analysis and confirms that their zero frequency limits
precisely reproduce our analytic formulas\, which is a non-trivial consist
ency check of our methods. We discuss the momentum relaxation effect on co
nductivities including cyclotron resonance poles.\n\nhttps://agenda.infn.i
t/event/8572/contributions/74360/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
A
URL:https://agenda.infn.it/event/8572/contributions/74360/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Diffusion and incoherence
DTSTART;VALUE=DATE-TIME:20150415T095000Z
DTEND;VALUE=DATE-TIME:20150415T102000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74359@agenda.infn.it
DESCRIPTION:Speakers: Daniele Musso ()\nCharge and heat diffusion are esse
ntial handles to grasp the transport of strongly coupled systems where mom
entum is quickly dissipated. Holography without momentum conservation allo
ws to compute the diffusion constants and explore the formulation of (poss
ibly general) bounds in analogy with the eta/s bound. The talk focuses on
the description of the diffusion constants computation and properties high
lighting the strength and limitations of the associated conjectured bounds
\, especially in view of attacking the strange metal transport physics fro
m the diffusion side.\n\nhttps://agenda.infn.it/event/8572/contributions/7
4359/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74359/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Testing the membrane paradigm with holography
DTSTART;VALUE=DATE-TIME:20150415T132000Z
DTEND;VALUE=DATE-TIME:20150415T135000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74358@agenda.infn.it
DESCRIPTION:Speakers: Natalia Pinzani Fokeeva ()\nFor an asymptotic observ
er a black hole can be replaced by a simple dissipative membrane located a
t a stretched horizon\, i.e. a very small distance outside the horizon. In
this talk I will show what are the limits of validity of such approximati
on scheme. In particular I will argue that it generically fails to capture
massive quasinormal modes. I will also show how it instead reproduces hyd
rodynamical modes of and AdS black brane as long as an additional spurious
excitation is removed from the spectrum.\n\nhttps://agenda.infn.it/event/
8572/contributions/74358/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
A
URL:https://agenda.infn.it/event/8572/contributions/74358/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic magneto-transport and strange metals
DTSTART;VALUE=DATE-TIME:20150415T125000Z
DTEND;VALUE=DATE-TIME:20150415T132000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74357@agenda.infn.it
DESCRIPTION:Speakers: Andrea Amoretti ()\nIn this talk we analyze the ther
mo-electric transport properties of a strongly coupled\, planar medium in
the presence of an orthogonal magnetic field and disorder. Even though the
analysis is performed within the gauge/gravity framework\, we propose and
argue for a possible universal relevance of the results relying on compar
isons and extensions of previous hydrodynamical analyses and experimental
data for strange metals.\n\nhttps://agenda.infn.it/event/8572/contribution
s/74357/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
A
URL:https://agenda.infn.it/event/8572/contributions/74357/
END:VEVENT
BEGIN:VEVENT
SUMMARY:All order linearized hydrodynamics from fluid-gravity corresponden
ce
DTSTART;VALUE=DATE-TIME:20150414T132000Z
DTEND;VALUE=DATE-TIME:20150414T135000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74356@agenda.infn.it
DESCRIPTION:Speakers: Michael Lublinsky ()\nhttps://agenda.infn.it/event/8
572/contributions/74356/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74356/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entanglement and differential entropy for massive flavors
DTSTART;VALUE=DATE-TIME:20150417T122000Z
DTEND;VALUE=DATE-TIME:20150417T130000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74355@agenda.infn.it
DESCRIPTION:Speakers: Marika Taylor ()\nIn this talk we will discuss entan
glement entropy for massive flavors\, from both holographic and field theo
ry perspectives. We will describe efficient computational methods for the
holographic entanglement entropy of brane systems\, and we will show that
the holographic entanglement entropy agrees precisely with field theory ex
pectations. We will explain how to extract finite terms in the the entangl
ement entropy unambiguously and give physical interpretations to these fin
ite contributions. Finally we will discuss the differential entropy for su
ch systems\, arguing that (in contrast to earlier work) the differential e
ntropy does not capture global spacetime structure.\n\nhttps://agenda.infn
.it/event/8572/contributions/74355/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74355/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pion resonances in Holographic QCD
DTSTART;VALUE=DATE-TIME:20150414T125000Z
DTEND;VALUE=DATE-TIME:20150414T132000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74354@agenda.infn.it
DESCRIPTION:Speakers: Alfonso Ballon-Bayona ()\nWe investigate the leptoni
c decay constants of pion resonances using a 5-d holographic model for Qua
ntum Chromodynamics (Holographic QCD). We obtain a generalized version of
the partially conserved axial current (PCAC) relation that includes the p
ion resonances. In the chiral limit\, we find that the decay constants van
ish\, confirming a prediction from nonperturbative QCD based on the Bethe-
Salpeter equations.\n\nhttps://agenda.infn.it/event/8572/contributions/743
54/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI) Room
B
URL:https://agenda.infn.it/event/8572/contributions/74354/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holographic Conductivity: Insulators\, Supersolids\, and scaling
DTSTART;VALUE=DATE-TIME:20150413T102000Z
DTEND;VALUE=DATE-TIME:20150413T105000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74353@agenda.infn.it
DESCRIPTION:Speakers: Elias Kiritsis ()\nhttps://agenda.infn.it/event/8572
/contributions/74353/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74353/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Simulations of BH Collisions in AdS5
DTSTART;VALUE=DATE-TIME:20150416T122000Z
DTEND;VALUE=DATE-TIME:20150416T130000Z
DTSTAMP;VALUE=DATE-TIME:20201020T003810Z
UID:indico-contribution-8572-74352@agenda.infn.it
DESCRIPTION:Speakers: Paul Romatschke ()\nIn the context of gauge/gravity
duality\, it has been suggested that the far-from equilibrium strongly cou
pled dynamics encountered in ultrarelativistic heavy-ion collisions may be
modeled as the collisions of black holes in asymptotic anti-de-Sitter spa
cetimes. I will present results from the evolution of spacetimes that desc
ribe the merger of asymptotically global AdS black holes in 5D with an SO(
3) symmetry. The initial trapped regions are sourced by scalar field colla
pse and we are able to evolve through the ensuing black hole merger as wel
l as subsequent ring-down. The boundary stress tensor corresponding to thi
s evolution is found to correspond to hydrodynamics at late times\, but no
t at early times. Implications and generalizations of this work and signat
ures that could be relevant to experimental observations at RHIC and the L
HC will be discussed.\n\nhttps://agenda.infn.it/event/8572/contributions/7
4352/
LOCATION:The Galileo Galilei Institute for Theoretical Physics (GGI)
URL:https://agenda.infn.it/event/8572/contributions/74352/
END:VEVENT
END:VCALENDAR