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VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Spectral properties of random regular graphs
DTSTART;VALUE=DATE-TIME:20160907T090000Z
DTEND;VALUE=DATE-TIME:20160907T100000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-10@cern.ch
DESCRIPTION:Speakers: Prof. BAUERSCHMIDT\, Roland (University of
Cambridge)\nDescription: In this talk we plan to summarize recent results
on convergence of correlations functions in\nthe critical 2D nearest-
neighbor Ising model (on general planar domains) to their
continuous\ncounterparts. This includes mixed correlations of spins\,
disorders\, fermions and energy densities (in\npreparation\, joint with
Clement Hongler (Lausanne) and Konstantin Izyurov (Helsinki)) and a
discrete version of the stress-energy tensor (arXiv:1604.06339\, joint
with Alexander Glaznam (Tel-Aviv) and Stanislav Smirnov (Geneva)). The
main technical tool is convergence theorems for discrete holomorphic
spinors that are known to solve particular Riemann-type boundary value
problems. In particular\, one can construct all the aforementioned
correlation functions and to deduce relevant CFT fusion rules
starting\nwith solutions to these Riemann-type boundary value problems in
continuum.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=10&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=10&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pfaffian Correlation Functions of Planar Dimer Covers
DTSTART;VALUE=DATE-TIME:20160907T130000Z
DTEND;VALUE=DATE-TIME:20160907T140000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-13@cern.ch
DESCRIPTION:Speakers: Prof. WARZEL\, Simone (TU Munich)\nDescription: In
this talk I will explain an elementary derivation of the Pfaffian nature
of boundary monomer correlation\nfunctions in the dimer-covering problem
on planar graphs. \nThe boundary monomer correlation functions are then
extended into a larger family of order-disorder correlation\nfunctions
which are shown to exhibit Pfaffian structure throughout the bulk. Key
tools which will be discussed\ninvolve combinatorial switching symmetries
which are identified through the loop-gas representation of the
double\ndimer model\, and topological implications of planarity. This is
joint work with Michael Aizenman and Manuel\nLainz Valcazar.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=13&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=13&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stability of Frustration-Free Ground States of Quantum Spin Systems
DTSTART;VALUE=DATE-TIME:20160905T073000Z
DTEND;VALUE=DATE-TIME:20160905T083000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-12@cern.ch
DESCRIPTION:Speakers: Prof. NACHTERGAELE\, Bruno (University of
California\, Davis)\nDescription: Abstract: We study frustration-free
quantum lattice systems with a non-vanishing spectral gap above one or
more\n(infinite-volume) ground states. The ground states are called stable
if arbitrary perturbations of the\nHamiltonian that are uniformly small
throughout the lattice have only a perturbative effect. In the
past\nseveral years such stability results have been obtained in
increasing generality. We review results by\nBravyi-Hastings\, Bravyi-
Hastings-Michalakis\, and Michalakis-Zwolak\, as well as recent
refinements. (Joint\nwork with Robert Sims and Amanda Young.)\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=12&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=12&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Localization of interacting fermions with quasi-random disorder
DTSTART;VALUE=DATE-TIME:20160905T090000Z
DTEND;VALUE=DATE-TIME:20160905T100000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-1@cern.ch
DESCRIPTION:Speakers: Prof. MASTROPIETRO\, Vieri (Universita' di
Milano)\nDescription: We consider interacting electrons in a one
dimensional lattice with an incommensurate Aubry-Andre' potential in the
regime when the single-particle eigenstates are localized. We rigorously
establish persistence of ground state localization in presence of weak
many-body interaction\, for almost all the chemical potentials. The proof
uses a quantum many body extension of methods adopted for the stability
of\ntori of nearly integrable hamiltonian systems\, and relies on number-
theoretic properties of the potential incommensurate frequency.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=1&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=1&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Order - Disorder operators in planar and almost planar graphs
DTSTART;VALUE=DATE-TIME:20160907T101500Z
DTEND;VALUE=DATE-TIME:20160907T111500Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-0@cern.ch
DESCRIPTION:Speakers: Prof. AIZENMAN\, Michael (Princeton University)\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=0&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=0&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Convergence of correlations in the 2D Ising model: primary fields
and the stress-energy tensor
DTSTART;VALUE=DATE-TIME:20160905T101500Z
DTEND;VALUE=DATE-TIME:20160905T111500Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-3@cern.ch
DESCRIPTION:Speakers: Prof. CHELKAK\, Dmitry (ENS\, Paris)\nDescription: In
this talk we plan to summarize recent results on convergence of
correlations functions in\nthe critical 2D nearest-neighbor Ising model
(on general planar domains) to their continuous\ncounterparts. This
includes mixed correlations of spins\, disorders\, fermions and energy
densities (in\npreparation\, joint with Clement Hongler (Lausanne) and
Konstantin Izyurov (Helsinki)) and a discrete version of the stress-energy
tensor (arXiv:1604.06339\, joint with Alexander Glaznam (Tel-Aviv) and
Stanislav Smirnov (Geneva)). The main technical tool is convergence
theorems for discrete holomorphic spinors that are known to solve
particular Riemann-type boundary value problems. In particular\, one can
construct all the aforementioned correlation functions and to deduce
relevant CFT fusion rules starting with solutions to these Riemann-type
boundary value problems in continuum.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=3&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=3&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Response in the topological insulators
DTSTART;VALUE=DATE-TIME:20160906T073000Z
DTEND;VALUE=DATE-TIME:20160906T083000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-5@cern.ch
DESCRIPTION:Speakers: Prof. GAWEDZKI\, Krzysztof (ENS de
Lyon)\nDescription: I shall discuss topological invariants of insulators
and their\nresponse interpretation.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=5&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=5&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Precise critical exponents from Conformal bootstrap
DTSTART;VALUE=DATE-TIME:20160905T130000Z
DTEND;VALUE=DATE-TIME:20160905T140000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-4@cern.ch
DESCRIPTION:Speakers: Prof. VICHI\, Alessandro ((Cern\,
Geneva))\nDescription: Originally formulated in the 70's\, the conformal
bootstrap is the ambitious idea that one can use internal\nconsistency
conditions to carve out\, and eventually solve\, the space of conformal
field theories. In this talk I will review recent developments in the
field which have boosted this program to a new level.\nI will present a
method to extract quantitative informations in strongly-interacting
theories\, such as 3D Ising\, O(N) vector model and even systems without a
Lagrangian formulation. I will explain how these techniques have led to
the world record determination of several critical exponents.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=4&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=4&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Invariant measures for nonlinear Schroedinger equations as limit of
many body quantum states.
DTSTART;VALUE=DATE-TIME:20160906T101500Z
DTEND;VALUE=DATE-TIME:20160906T111500Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-7@cern.ch
DESCRIPTION:Speakers: Prof. SCHLEIN\, Benjamin (Univ. Zurich)\nDescription:
We prove that Gibbs measures of nonlinear Schroedinger equations of
Hartree-type arise as\nhigh-temperature limit of \nappropriately modified
thermal states in many-body quantum mechanics. In dimensions d=2\,3 these
Gibbs\nmeasures are supported \non singular distributions and Wick
ordering of the interaction is necessary. Our proof is based on
a\nperturbative expansion in the\ninteraction\, organised in a
diagrammatic representation\, and on Borel resummation of the resulting
series.\nThis is a joint work \nwith J. Froehlich\, A. Knowles and V.
Sohinger.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=7&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=7&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Universality and Hall transitions in interacting fermionic systems
Abstract: In this talk I will discuss the charge transport properties of
weakly interacting fermionic
DTSTART;VALUE=DATE-TIME:20160906T090000Z
DTEND;VALUE=DATE-TIME:20160906T100000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-6@cern.ch
DESCRIPTION:Speakers: Prof. PORTA\, Marcello ()\nDescription: In this talk
I will discuss the charge transport properties of weakly interacting
fermionic\nsystems\, in the zero temperature and infinite volume limit. In
the first part of the talk I will consider\ngeneral interacting\, gapped
fermionic systems on periodic two-dimensional lattices. Our theorem
states that\nthe Kubo conductivity matrix is independent of many-body
interactions\, provided the interaction strength is\nsmall enough. In
particular\, the result proves the stability of the integer quantum Hall
effect against weak\nmany-body interactions. In the second part of the
talk\, I will focus on the transitions between different\ntopological Hall
phases in the interacting Haldane model. The Haldane model is a graphene-
like model that\, in\nthe absence of interactions\, displays a non-trivial
topological phase diagram. We consider the model in the\npresence of weak
many-body interactions\, and we give a rigorous construction of the
renormalized transition\nline. Despite the nontrivial renormalization of
the wave function and of the Fermi velocity\, the conductivity\nis
universal: at the renormalized critical line\, both the discontinuity of
the transverse conductivity and\nthe longitudinal conductivity do not
depend on the interaction. The proofs are based on a combination
of\ncluster expansion techniques\, rigorous renormalization group and Ward
identities. Joint work with A.\nGiuliani\, I. Jauslin and V.
Mastropietro.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=6&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=6&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kondo's effect in a hierarchical s-d model and its perspectives.
DTSTART;VALUE=DATE-TIME:20160907T073000Z
DTEND;VALUE=DATE-TIME:20160907T083000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-9@cern.ch
DESCRIPTION:Speakers: Prof. GALLAVOTTI\, Giovanni (ROMA1)\nDescription: The
hierarchical model for the s-d model is simpler than the\ncorresponding
version of the Andrei kodel. But there is a precise relation between the
RG flows for the two\nmodels which will be illustrated. Some properties of
the beta function for the translation invariant (non\nhierarchical)
Andrei's model will be also discussed.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=9&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=9&confId=10949
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bose Particles in a Box: Convergent Expansion of the Ground State
DTSTART;VALUE=DATE-TIME:20160906T130000Z
DTEND;VALUE=DATE-TIME:20160906T140000Z
DTSTAMP;VALUE=DATE-TIME:20170923T125417Z
UID:indico-contribution-10949-8@cern.ch
DESCRIPTION:Speakers: Prof. PIZZO\, Alessandro (Universita' di Roma "Tor
Vergata")\nDescription: I shall report on some recent works where I have
introduced a \nmulti-scale analysis in the occupation numbers of particle
states that provides a\nconvergent expansion of the ground state of
an\ninteracting Bose gas in a finite box and in the mean\nfield limiting
regime. The talk will be mainly\nfocussed on the construction of the
ground state of a\nthree-modes system.\nURL:
https://agenda.infn.it/contributionDisplay.py?contribId=8&confId=10949
LOCATION:INFN - Laboratori Nazionali di Frascati
Auditorium B. Touschek
URL:https://agenda.infn.it/contributionDisplay.py?contribId=8&confId=10949
END:VEVENT
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