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X-WR-CALNAME:IAS Physics
BEGIN:VEVENT
UID:7b6e6dab-a0dc-412d-b484-eb27842ad76f
DTSTAMP:20191212T084613Z
CREATED:20190628T181502Z
DESCRIPTION:Topic: The Holographic Dual of Strongly γ-deformed N=4 SYM Theo
ry\n\nSpeaker: Amit Sever\, CERN\n\nVideo: https://video.ias.edu/HETS/2019
/0916-AmitSever\n\nWe present a first-principles derivation of a weak-stro
ng duality between the four-dimensional fishnet theory in the planar limit
and a discretized string-like model living in AdS5. At strong coupling\,
the dual description becomes classical and we demonstrate explicitly the c
lassical integrability of the model. We test our results by reproducing th
e strong coupling limit of the 4-point correlator computed before non-pert
urbatively from the conformal partial wave expansion. Next\, by applying t
he canonical quantization procedure with constraints\, we show that the mo
del describes a quantum integrable chain of particles propagating in AdS5.
Finally\, we reveal a discrete reparametrization symmetry of the model an
d reproduce the spectrum when known analytically. Due to the simplicity of
our model\, it could provide an ideal playground for holography. Furtherm
ore\, since the fishnet model and N=4 SYM theory are continuously linked o
ur consideration could shed light on the derivation of AdS/CFT for the lat
ter. This talk is based on recent work with Nikolay Gromov.
DTSTART:20190916T183000Z
DTEND:20190916T200000Z
LAST-MODIFIED:20190916T190002Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101951
END:VEVENT
BEGIN:VEVENT
UID:c12a1208-8ed4-4351-991d-c9fa19bd6fdf
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: A brief review of some work on BPS states\, wall-crossin
g\, hyperkahler geometry\, Hitchin systems\, etc.\n\nSpeaker: Greg Moore\,
Rutgers University\n\nThis talk will give a brief overview focused on six
papers written by D. Gaiotto\, G. Moore\, and A. Neitzke\nloosely centere
d around the topics mentioned in the title. The papers are on the arXiv.\n
Background reading: Some short reviews are:\nhttps://arxiv.org/pdf/1211.23
31.pdf\nhttps://arxiv.org/pdf/1308.2198.pdf\nhttps://arxiv.org/pdf/1412.71
20.pdf\nSome pedagogical/summer school lecture notes can be found in talks
# 31\, 35\, 47\, 84 on the home page of G. Moore:\nhttp://www.physics.rut
gers.edu/~gmoore/
DTSTART:20190918T174500Z
DTEND:20190918T190000Z
LAST-MODIFIED:20190916T174502Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104106
END:VEVENT
BEGIN:VEVENT
UID:b3203e02-ba07-49f2-afec-6450d771b37d
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: Cardy Formula and AdS Black Holes\n\nSpeaker: Joonho Kim
\, Member\, School of Natural Sciences\, IAS\n\nI will discuss recent prog
ress about the Cardy-like asymptotics of 4d supersymmetric index on S^3\,
also known as superconformal index. The main observation is that Bose-Ferm
i cancellation that trivializes the asymptotic expression of the index can
be obstructed by complexifying chemical potentials. Applied to N=4 SYM\,
the new asymptotic free energy reproduces the Bekenstein-Hawking entropy o
f the known 1/16 BPS black hole in AdS5. If time permits\, I will also tal
k about some circumstantial evidences for new BPS black holes. (References
: 1810.12067\, 1811.08646\, 1904.03455.)
DTSTART:20190925T174500Z
DTEND:20190925T190000Z
LAST-MODIFIED:20190920T131501Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104111
END:VEVENT
BEGIN:VEVENT
UID:7775f6ef-41a8-4023-9a0b-15ddcf7fd843
DTSTAMP:20191212T084613Z
CREATED:20190628T181502Z
DESCRIPTION:Topic: Aspects of Scattering Amplitudes and Moduli Space Locali
zation\n\nSpeaker: Sebastian Mizera\, Member\, School of Natural Sciences\
, IAS\n\nWe review a recent geometric formulation of the tree-level S-matr
ix of various quantum field theories\, including gauge and gravity theorie
s\, in terms of intersection numbers of twisted cohomology groups on the m
oduli space of genus-zero curves with marked points. Scattering amplitudes
are computed in terms of integrals over such moduli spaces that localize
on worldsheets resembling Feynman diagrams and in certain circumstances co
incide with the field-theory limit of string theory. We outline recursion
relations that allow for explicit computations of S-matrices on the forget
ful fibration of moduli spaces. We show that in the massless limit interse
ction numbers have another localization formula on the critical points of
a certain Morse function.
DTSTART:20190927T174500Z
DTEND:20190927T190000Z
LAST-MODIFIED:20190923T150001Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101956
END:VEVENT
BEGIN:VEVENT
UID:2298b8a7-b64a-4ee9-83aa-089716191f9c
DTSTAMP:20191212T084613Z
CREATED:20190628T181502Z
DESCRIPTION:Topic: General F-theory Models with SU(3) x SU(2) x U(1) / Z_6
Symmetry\n\nSpeaker: Andrew Turner\, Massachusetts Institute of Technology
\n\nVideo: https://video.ias.edu/HET/2019/0930-AndrewTurner\n\nWe construc
t a general form for an F-theory Weierstrass model over any base giving a
6D or 4D supergravity theory with gauge group SU(3) x SU(2) x U(1) / Z_6 a
nd associated generic matter. The concept of 'generic matter' can be rigor
ously defined in 6D supergravity and generalizes naturally to four dimensi
ons for F-theory models. We describe general F-theory models with this gau
ge group and the associated generic matter content\, which fit into two di
stinct classes\, and present an explicit Weierstrass model that realizes t
hese models as two distinct branches. We also discuss\, as a special case\
, the class of models recently studied by Cvetic\, Halverson\, Lin\, Liu\,
and Tian\, for which we demonstrate explicitly the possibility of unifica
tion through an SU(5) unHiggsing.
DTSTART:20190930T183000Z
DTEND:20190930T200000Z
LAST-MODIFIED:20190930T193001Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101961
END:VEVENT
BEGIN:VEVENT
UID:f548adab-6dca-4f15-a529-985006734525
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: Hawking Radiation at Strong Coupling: A Case for Branewo
rld Black Holes\n\nSpeaker: Jorge Santos\, Junior Visiting Professor\, Sch
ool of Natural Sciences\, IAS\; University of Cambridge\n\nGauge/gravity d
uality relates certain strongly coupled CFTs with large effective central
charge to semi-classical gravitational theories with AdS asymptotics. I wi
ll describe recent progress in understanding gravity duals for CFTs on non
-trivial spacetimes with black hole horizons. Such gravity methods provide
powerful new tools to access the physics of these strongly coupled theori
es\, which often differs qualitatively from that found at weak coupling. I
will then use some of the intuition gather from these studies to motivate
the existence of static black holes in Randall-Sundrum II braneworlds. If
time permits\, I will discuss some of its properties such as dynamical st
ability.Reading material: arXiv:1104.4489\, arXiv:1105.2558\, arXiv:1208.6
291\, arXiv:1212.4820\, arXiv:1405.2078\, arXiv:1604.04832
DTSTART:20191002T174500Z
DTEND:20191002T190000Z
LAST-MODIFIED:20190927T131501Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104116
END:VEVENT
BEGIN:VEVENT
UID:471645dd-b15d-41bc-8172-3a738c26c6dd
DTSTAMP:20191212T084613Z
CREATED:20190628T181502Z
DESCRIPTION:Topic: Duality Constraints on Superstring Scattering Amplitudes
\n\nSpeaker: Michael Green\, University of Cambridge\n\nThis talk will rev
iew the structure of closed superstring scattering amplitudes with particu
lar emphasis on the constraints imposed by various dualities. This leads t
o precise determination of the coefficients of low order terms in the low
energy expansion of amplitudes in theories with maximal supersymmetry. Amo
ng other things\, these results provide 'data' that should be matched by t
he holographic connections with conformal field theories.
DTSTART:20191004T174500Z
DTEND:20191004T190000Z
LAST-MODIFIED:20191001T181502Z
LOCATION:Jadwin Hall\, Room A06
SUMMARY:High Energy Theory Seminar - CANCELED
URL:https://www.ias.edu/node/101966
END:VEVENT
BEGIN:VEVENT
UID:9a5a4b3e-7266-452c-8c2a-8fda07e027e4
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: Black Hole Images and the Photon Ring\n\nSpeaker: Daniel
Kapec\, Member\, School of Natural Sciences\, IAS\n\nThe EHT Collaboratio
n has recently published images of the supermassive black hole in M87. The
images are dominated by a bright ring-like structure with an angular brig
htness asymmetry. While the diameter of this ring is resolved by the EHT\,
its thickness and detailed substructure are not. General relativity predi
cts that within this image lies a thin “photon ring\,” composed of an infi
nite sequence of bright self-similar subrings. I will discuss the theoreti
cal aspects of these general features of astrophysical black hole images\,
as well as the potential observability of the photon ring at extensions o
f the EHT.\nReading material:\narXiv:1907.04329\, arXiv:1906.11242\, arXiv
:1905.11406
DTSTART:20191009T174500Z
DTEND:20191009T190000Z
LAST-MODIFIED:20191004T143002Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104121
END:VEVENT
BEGIN:VEVENT
UID:d5631133-fc6f-4b69-94c7-f77afa0198c0
DTSTAMP:20191212T084613Z
CREATED:20190628T181502Z
DESCRIPTION:Topic: Entanglement Wedge Reconstruction and the Information Pa
radox\n\nSpeaker: Geoff Penington\, Stanford University\n\nWhen absorbing
boundary conditions are used to evaporate a black hole in AdS/CFT\, we sho
w that there is a phase transition in the location of the quantum Ryu-Taka
yanagi surface\, at precisely the Page time. The new RT surface lies sligh
tly inside the event horizon\, at an infalling time approximately one scra
mbling time in the past. We can immediately derive the Page curve\, using
the Ryu-Takayanagi formula\, and the Hayden-Preskill decoding criterion\,
using entanglement wedge reconstruction. Becausepart of the interior is no
w encoded in the early Hawking radiation\, the decreasing entanglement ent
ropy of the black hole is exactly consistent with the semiclassical bulk e
ntanglement of the late-time Hawking modes\, despite the absence of a fire
wall. By studying the entanglement wedge of highly mixed states\, we can u
nderstand the state dependence of the interior reconstructions. Directly a
fter the Page time\, interior operators can only be reconstructed from the
Hawking radiation if the initial state of the black hole is known. As the
black hole continues to evaporate\, reconstructions become possible that
simultaneously work for a large class of initial states. This state depend
ence provides the mechanism by which information that falls into the black
hole eventually escapes in the Hawking radiation.
DTSTART:20191014T183000Z
DTEND:20191014T200000Z
LAST-MODIFIED:20191007T144501Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101971
END:VEVENT
BEGIN:VEVENT
UID:ab69cd95-dd68-4c8f-b6ea-0ed59704b6ef
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: Matrix Models and Minimal Liouville Gravity\n\nSpeaker:
Baurzhan Mukhametzhanov\, Member\, School of Natural Sciences\, IAS\n\nI w
ill review some old ideas about the duality between matrix models and Liou
ville theory coupled to a (p\,q) minimal model. In this approach t'Hooft d
iagrams of the matrix model are thought of as a discretization of a 2d sur
face. Fine-tuning of the coupling constant leads to divergence of the pert
urbative expansion. In this limit dense t'Hooft diagrams dominate and beco
me a good approximation of a smooth 2d surface.\nReading material:\nhep-th
/9306153\; hep-th/9304011\; Seiberg\, 'Notes on quantum Liouville theory a
nd quantum gravity'\; Lecture notes by Zamolodchikov brothers http://qft.i
tp.ac.ru/ZZ.pdf
DTSTART:20191016T174500Z
DTEND:20191016T190000Z
LAST-MODIFIED:20191014T131502Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104126
END:VEVENT
BEGIN:VEVENT
UID:4413c799-10e5-407a-988c-3dfbc46c09ab
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: The Geroch Group\n\nSpeaker: Robert Penna\, Member\, Sch
ool of Natural Sciences\, IAS\n\nWe review some infinite dimensional symme
tries that appear in dimensionally reduced classical general relativity. R
educing from d=4 to d=2 gives a two dimensional nonlinear sigma model with
an infinite dimensional affine Kac-Moody symmetry called the Geroch group
. Further reducing to d=1 (along a null Kill vector) enhances the Geroch g
roup to a mysterious 'hyperbolic Kac-Moody' symmetry.Further reading:\n[1]
P. Breitenlohner and D. Maison\, 'On the Geroch group\,' Ann. Inst. H. Po
incare\, 46\, 215 (1987)\n[2] H. Nicolai\, 'Two-dimensional gravities and
supergravities as integrable systems\,' in “Schladming 1991\, Proceedings\
, Recent aspects of quantum fields\,” 231\, and Hamburg DESY 91-038\n[3] H
. Lu\, M. Perry\, and C. Pope\, ArXiv:0711.0400 and ArXiv:0712.0615
DTSTART:20191023T174500Z
DTEND:20191023T190000Z
LAST-MODIFIED:20191018T170001Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104131
END:VEVENT
BEGIN:VEVENT
UID:1c8581d1-ce28-4c7c-9fa2-5acf6649e959
DTSTAMP:20191212T084613Z
CREATED:20190628T181502Z
DESCRIPTION:Topic: Correlation Functions in AdS3/CFT2\n\nSpeaker: Lorenz Eb
erhardt\, Member\, School of Natural Sciences\, IAS\n\nVideo: https://vide
o.ias.edu/HET/2019/1025-LorenzEberhardt\n\nRecently\, an exact AdS3/CFT2 d
uality was proposed. String theory on AdS3xS3xT4 with one unit of pure NS-
NS background flux was conjectured to be dual to the symmetric product orb
ifold of T4. This is established at the level of the full spectrum of the
CFT. In this talk I will report on the matching of sphere correlation func
tions. This involves crucially the so-called spectrally flowed representat
ions. The moduli space integral of n-point functions for n>3 is argued to
localise to a finite sum. I will also discuss the corresponding classical
solution of the SL(2\,R) WZW model and show that their on-shell action pre
cisely reproduce the correlation functions in the symmetric product orbifo
ld as calculated by path integral methods.
DTSTART:20191025T174500Z
DTEND:20191025T190000Z
LAST-MODIFIED:20191025T182003Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101976
END:VEVENT
BEGIN:VEVENT
UID:b5ec14b4-2a3a-4572-bff5-a5f4b0d642ee
DTSTAMP:20191212T084613Z
CREATED:20190628T181502Z
DESCRIPTION:Topic: Dynamical Constraints on RG Flows and Cosmology\n\nSpeak
er: Tom Hartman\, Cornell University\n\nI will discuss time-dependent prob
es of the renormalization group\, and derive new constraints that govern t
he spread of local operators in holographic theories. The same methods lea
d to sum rules for inflationary correlators\, relating observables\, like
the speed of sound during inflation\, to properties of the UV theory.
DTSTART:20191028T183000Z
DTEND:20191028T200000Z
LAST-MODIFIED:20191024T130002Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101981
END:VEVENT
BEGIN:VEVENT
UID:cc0b4310-4f9f-41c3-8b47-513e866b1426
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: Topological Holography\n\nSpeaker: Nafiz Ishtiaque\, Mem
ber\, School of Natural Sciences\, IAS\n\nWe consider supersymmetric twist
and omega deformation of a type IIB brane setup involving N D3 and K D5 b
ranes. In the large N limit\, this leads to a holographic duality between
two topological/holomorphic theories. We compute certain operator algebras
from both sides of this topological holographic duality and find the resu
lt consistent with the claimed duality. The algebra we compute is the Yang
ian of gl_K\, which is the symmetry algebra of an integrable spin chain. I
n addition\, the instance of topological holography that we find is an exa
mple supporting Costello's proposal relating holography and Koszul duality
.
DTSTART:20191030T174500Z
DTEND:20191030T190000Z
LAST-MODIFIED:20191025T134501Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104136
END:VEVENT
BEGIN:VEVENT
UID:171e789d-4582-4899-ab6b-e6c8270cb789
DTSTAMP:20191212T084613Z
CREATED:20190628T181502Z
DESCRIPTION:Topic: High-Energy Conformal Bootstrap and Tauberian Theory\n\n
Speaker: Baurzhan Mukhametzhanov\, Member\, School of Natural Sciences\, I
AS\n\nWe analyze modular invariance drawing inspiration from tauberian\nth
eorems. Given a modular invariant partition function with a positive\nspec
tral density\, we derive lower and upper bounds on the number of\noperator
s within a given energy interval. They are most revealing at high\nenergie
s. In this limit we rigorously derive the Cardy formula for the\nmicrocano
nical entropy together with optimal error estimates for various\nwidths of
the averaging energy shell. Finally\, we identify a new universal\ncontri
bution to the microcanonical entropy controlled by the central\ncharge and
the width of the shell.
DTSTART:20191101T174500Z
DTEND:20191101T190000Z
LAST-MODIFIED:20191028T140002Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101986
END:VEVENT
BEGIN:VEVENT
UID:967aa8ec-ebcb-4197-9322-ae3ae11e62fe
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: Disordered Electronic Systems: Some Illustrative Vignett
es\n\nSpeaker: Ravindra Bhatt\, Member\, School of Natural Sciences\, IAS\
; Princeton University\n\nThe physics of systems with quenched random diso
rder reveals behavior qualitatively different from that found in systems w
ith translational symmetry\, continuous or discrete. The seminal work by A
nderson over six decades back [1] established the phenomenon of electron l
ocalization in a model of non-interacting electrons and showed the existen
ce of a metal-insulator (extended-localized) transition in three dimension
s. Since then\, a host of interesting phenomena have been uncovered\, expl
oring e.g.\, the role of system dimensionality\, the impact of breaking ti
me-reversal and other symmetries\, the influence of electron-electron inte
ractions\, and the effects of rare fluctuations.In this talk I will descri
be some of these through illustrative examples we have explored in the pas
t several decades\, using platforms where semiconductors act as the vacuum
. I will discuss in particular (i) magnetic behavior of doped semiconducto
rs below and above the insulator-metal transition [2-4]\, (ii) magnetism i
n diluted magnetic semiconductors at low electron density [5\,6]\, and\, i
f time permits\, (iii) many-body electron localization in two dimensions i
n the quantum Hall regime [7.8].[1] P. W. Anderson\, Physical Review 109\,
1492 (1958).\n[2] R. N. Bhatt and P. A. Lee\, Physical Review Letters 48\
, 344 (1982).\n[3] M. Milovanovic\, S. Sachdev and R. N. Bhatt\, Physical
Review Letters 63\, 82 (1989).\n[4] R. N. Bhatt and D. S. Fisher\, Physica
l Review Letters 68\, 3072 (1992).\n[5] Xin Wan and R. N. Bhatt\, Internat
ional Journal of Modern Physics C 10\, 1459 (2000).\n[6] Mona Berciu and R
. N. Bhatt\, Physical Review Letters 87\, 107203 (2001).\n[7] Scott D. Ger
aedts and R. N. Bhatt\, Physical Review B 95\, 054303 (2017).\n[8] Akshay
Krishna\, Matteo Ippoliti and R. N. Bhatt\, Physical Review B 89\, 041111(
R) (2019)\; Physical Review B 100\, 054202 (2019).
DTSTART:20191106T184500Z
DTEND:20191106T200000Z
LAST-MODIFIED:20191101T190001Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104141
END:VEVENT
BEGIN:VEVENT
UID:7ab65b29-24c4-48b0-a195-08d3051af17c
DTSTAMP:20191212T084613Z
CREATED:20190628T182007Z
DESCRIPTION:Topic: Deforming Holomorphic Chern-Simons at Large N\n\nSpeaker
: Si Li\, Member\, School of Natural Sciences\, IAS\; Tsinghua University
\n\nVideo: https://video.ias.edu/HET/2019/1115-SiLi\n\nWe describe the cou
pling of holomorphic Chern-Simons theory at large N with Kodaira-Spencer g
ravity. This gives a complete description of open-closed string field theo
ry in the topological B-model. We explain an anomaly cancellation mechanis
m at all loops in perturbation theory in this model. At one loop this anom
aly cancellation is analogous to the Green-Schwarz mechanism. This is join
t work with Kevin Costello.
DTSTART:20191115T184500Z
DTEND:20191115T200000Z
LAST-MODIFIED:20191115T181502Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101991
END:VEVENT
BEGIN:VEVENT
UID:480e37f4-b4f4-4cc3-acf7-bf52bd0b4986
DTSTAMP:20191212T084613Z
CREATED:20190628T182007Z
DESCRIPTION:Topic: TMF and SQFT\n\nSpeaker: Theo Johnson-Freyd\, Perimeter
Institute\n\nI will describe my work\, all joint with D. Gaiotto and some
also joint with E. Witten\, to understand the homotopy type of the space o
f (1+1)d N=(0\,1) SQFTs --- what a condensed matter theorist would call 'p
hases' of SQFTs. Our motivating hypothesis (due in large part to Stolz and
Teichner) is that this space models the spectrum called 'topological modu
lar forms'. Our work includes many nontrivial checks of this hypothesis. F
irst\, the hypothesis implies constraints on the possible values of ellipt
ic genera\, and suggests (but does not imply) the existence of holomorphic
SCFTs saturating these constraints\; we have succeeded in constructing su
ch SCFTs in low central charge. Second\, the hypothesis implies the existe
nce of torsion-valued 'secondary invariants' beyond the elliptic genus tha
t protect SQFTs from admitting deformations that spontaneously break super
symmetry. I will explain such an invariant in terms of holomorphic anomali
es and mock modularity.
DTSTART:20191118T193000Z
DTEND:20191118T210000Z
LAST-MODIFIED:20190821T202005Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/101996
END:VEVENT
BEGIN:VEVENT
UID:6f88a9c8-a3fa-45a5-ae58-6c4adadac210
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:Topic: On a Quantum Penrose Inequality\n\nSpeaker: Adam Levine\
, Member\, School of Natural Sciences\, IAS\n\nSuggested reading:\nMarc Ma
rs\, Present Status of the Penrose Inequality\, arXiv:0906.5566\nNetta Eng
elhardt and Gary Horowitz\, A Holographic Argument for the Penrose Inequal
ity in AdS\, arXiv:1903.00555\nQuantum Penrose Inequality\, arXiv:1908.027
55
DTSTART:20191120T184500Z
DTEND:20191120T200000Z
LAST-MODIFIED:20191115T164501Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104146
END:VEVENT
BEGIN:VEVENT
UID:f0cff467-1b6a-4eb8-bdd6-ed6062fab9fa
DTSTAMP:20191212T084613Z
CREATED:20190628T182007Z
DESCRIPTION:Topic: Perspectives on the Generally-Relativistic Two-Body Prob
lem from Double Copy & EFT\n\nSpeaker: Radu Roiban\, Pennsylvania State Un
iversity\n\nWhile the flat space two-body problem is integrable\, the gene
rally-relativistic one is not starting at the next-to-leading order.\nIn t
he appropriate classical limit\, scattering amplitude-based techniques can
yield the classical interaction of massive bodies to all orders in their
velocities and to fixed order in the expansion in Newton's constant\, that
is a fixed order in the post-Minkowskian (relativistic weak-field) expans
ion.\nIn this talk we review an amplitudes-based framework for such calcul
ations and the derivation of the third order in the post-Minkowskian expan
sion for the conservative Hamiltonian of a compact spinless binary system.
We also describe the scattering angle at this order as well as a first co
mparison with numerical GR.
DTSTART:20191125T193000Z
DTEND:20191125T210000Z
LAST-MODIFIED:20191119T190001Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/102001
END:VEVENT
BEGIN:VEVENT
UID:8bd5925d-f945-41c1-be6c-d42917064b12
DTSTAMP:20191212T084613Z
CREATED:20190726T200002Z
DESCRIPTION:Topic: Lorentz Symmetry Fractionalizations and Dualities in (2+
1)d\n\nSpeaker: Po-Shen Hsin\, Caltech\n\nI will introduce a new discrete
transformation in quantum field theory with Z2 1-form symmetry\, with some
applications to boson/fermion dualities in (2+1)d.\nThis is based on the
work https://arxiv.org/abs/1909.07383with Shu-Heng Shao (IAS).
DTSTART:20191202T193000Z
DTEND:20191202T210000Z
LAST-MODIFIED:20191202T190001Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/102396
END:VEVENT
BEGIN:VEVENT
UID:7ce0e51a-ae8f-42f1-8498-b7709da248f4
DTSTAMP:20191212T084613Z
CREATED:20190628T182007Z
DESCRIPTION:Topic: Workshop on Qubits and Spacetime\n\nPlease Note: This wo
rkshop is not open to the general public\, but only to active researchers.
This workshop will focus on quantum aspects of black holes\, focusing on a
pplying ideas from quantum information theory.This meeting is sponsored by
the 'It from Qubit'collaboration and is followed by the collaboration mee
ting in New York City.
DTSTART:20191203T130000Z
DTEND:20191203T230000Z
LAST-MODIFIED:20191127T153001Z
LOCATION:Wolfensohn Hall
SUMMARY:It from Qubit Conference
URL:https://www.ias.edu/node/102011
END:VEVENT
BEGIN:VEVENT
UID:b4b9c7a1-e814-4e9b-b1b8-c2510b5e6007
DTSTAMP:20191212T084613Z
CREATED:20190628T183002Z
DESCRIPTION:Topic: Workshop on Qubits and Spacetime\n\nPlease Note: This wo
rkshop is not open to the general public\, but only to active researchers.
This workshop will focus on quantum aspects of black holes\, focusing on a
pplying ideas from quantum information theory.This meeting is sponsored by
the 'It from Qubit'collaboration and is followed by the collaboration mee
ting in New York City.
DTSTART:20191204T130000Z
DTEND:20191204T230000Z
LAST-MODIFIED:20191127T153001Z
LOCATION:Wolfensohn Hall
SUMMARY:It from Qubit Conference
URL:https://www.ias.edu/node/102016
END:VEVENT
BEGIN:VEVENT
UID:b46693d4-fbf6-479b-9169-adf494606d5b
DTSTAMP:20191212T084613Z
CREATED:20190905T141502Z
DESCRIPTION:Topic: Towards optimal asymptotic spectral gap in 2D unitary CF
T\n\nSpeaker: Sridip Pal\, Member\, School of Natural Sciences\, IAS\n\nWe
will prove a conjecture [1] on upper bound of asymptotic gap in dimension
in unitary compact 2D CFT\, proving it to be 1 using a 'extremal' functio
n [2]. The notion of asymptotic gap can be generalized to (h\, \bar{h}) pl
ane [3]. We will discuss how the extremal function used in [2] can be put
into a bigger (natural) framework of an extremal problem of entire functio
n with certain exponential growth [4]. This facilitates a generalization o
f construction of optimal function (within the class of Bandlimited functi
on) and hence the optimal gap on (h\, \bar{h}) plane. Reading material:[1]
Baur Mukhametzhanov\, Alexander Zhiboedov\, Modular Invariance\, Tauberia
n Theorems\, and Microcanonical Entropy\, arXiv: 1904.06359 [hep-th][2] Sh
ouvik Ganguly\, SP\, Bounds on density of states and spectral gap in CFT_2
\, arXiv: 1905.12636 [hep-th] (in particular section 4)[3] SP\, Zhengdi Su
n\, Tauberian-Cardy formula with spin\, arXiv: 1910.07727 [hep-th]\n[4] D.
V. Gorbachev\, Extremum Problems for Entire Functions of Exponential Sph
erical Type\, Mathematical Notes\, Vol 68\, N0. 2\, 2000\nI will mostly be
focussing on the extremal problem. More reading material on application o
f Tauberian theorem can be found in:\n1. D. Pappadopulo\, S. Rychkov\, J.
Espin\, and R. Rattazzi\, Operator product expansion convergence in confor
mal field theory\, Physical Review D 86 no. 10\, (2012) 105043.2. J. Qiao
and S. Rychkov\, A tauberian theorem for the conformal bootstrap\, JHEP 12
(2017) 119\, arXiv:1709.00008 [hep-th].3. B. Mukhametzhanov and A. Zhiboe
dov\, Analytic euclidean bootstrap\, arXiv preprint arXiv:1808.03212 (2018
).4. SP\, Bound on asymptotics of magnitude of three point coefficients in
2D CFT\, arXiv:1906.11223 [hep-th].5. Appendix C of D. Das\, S. Datta\, a
nd SP\, Charged structure constants from modularity\, JHEP 11 (2017) 183\,
arXiv:1706.04612 [hep-th].
DTSTART:20191211T184500Z
DTEND:20191211T200000Z
LAST-MODIFIED:20191206T200001Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:Physics Group Meeting
URL:https://www.ias.edu/node/104166
END:VEVENT
BEGIN:VEVENT
UID:73d2f878-992a-4b1f-9acd-78b6ce2a5018
DTSTAMP:20191212T084613Z
CREATED:20190628T182007Z
DESCRIPTION:Topic: Topological Quantum Phases\n\nSpeaker: Alexei Kitaev\, C
altech\; Distinguished Visiting Professor\, School of Natural Sciences\, I
AS\n\nI will discuss topological classification of gapped many-body Hamilt
onians and their ground states in dimension d. In general\, the problem is
too hard as it includes diverse phenomena such as degenerate ground state
s on the torus\, anyons\, and fractons. There is\, however\, hope to fully
understand short-range entangled\, or 'invertible' systems\, which do not
have the aforementioned features but may possess gapless edge modes. In t
he case of non-interacting fermions\, the topological classification is ba
sed on K-theory. I will argue that general invertible systems are describe
d by some homotopy spectrum (or equivalently\, generalized cohomology theo
ry). However\, the exact answer is not yet known.
DTSTART:20191213T184500Z
DTEND:20191213T200000Z
LAST-MODIFIED:20191127T141501Z
LOCATION:Bloomberg Lecture Hall
SUMMARY:High Energy Theory Seminar
URL:https://www.ias.edu/node/102006
END:VEVENT
BEGIN:VEVENT
UID:849306e6-3fdd-4827-ad2a-ef93c049cc0d
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200713T110000Z
DTEND:20200714T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:4bb87140-7a3b-4129-94d5-bf64b8301cbb
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200714T110000Z
DTEND:20200715T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:16ac2773-147a-4de2-951c-572a0ba59ffe
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200715T110000Z
DTEND:20200716T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:d2bd1feb-93b3-4612-88ab-593651887ea9
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200716T110000Z
DTEND:20200717T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:74de4873-ea7e-4850-ab35-cc3f5069020f
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200717T110000Z
DTEND:20200718T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:1b423f08-20d3-45af-bcd3-62388265e043
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200718T110000Z
DTEND:20200719T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:3d941f39-205e-4590-a814-751d7e0ecabc
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200719T110000Z
DTEND:20200720T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:f41563f3-ad56-4f33-b47a-a228c064f82f
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200720T110000Z
DTEND:20200721T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:728229cb-8fdc-41a8-ad2c-5b950ca05784
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200721T110000Z
DTEND:20200722T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:2a9c6a26-b49a-414e-b4ea-67eb9f264d01
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200722T110000Z
DTEND:20200723T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:afce0b70-d8de-4e86-914b-976a14b139e1
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200723T110000Z
DTEND:20200724T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:6508a7b7-9b7b-41e4-8757-4d62362f1bb5
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200724T110000Z
DTEND:20200725T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104091
END:VEVENT
BEGIN:VEVENT
UID:f9a97224-65ce-4cdf-a0b4-76568b933c4d
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200713T110000Z
DTEND:20200714T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:37cd132f-6550-47c4-8bf2-64a3597c9b1a
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200714T110000Z
DTEND:20200715T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:fc2adc49-e8a3-417f-869f-f339d0ae6cf7
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200715T110000Z
DTEND:20200716T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:11d460e2-1cae-4b74-8bd4-6864446aab9d
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200716T110000Z
DTEND:20200717T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:e5e11944-a5d7-4316-972d-2c33688bbd13
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200717T110000Z
DTEND:20200718T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:ae12baae-42e9-400b-a3d8-584e73049cbf
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200718T110000Z
DTEND:20200719T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:af22ad32-aa35-4f7c-9938-8afbbe33e2cf
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200719T110000Z
DTEND:20200720T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:9ce6fb0f-c579-4837-bd11-7dd13e2770a0
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200720T110000Z
DTEND:20200721T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:35945db0-e883-4685-af1f-68a627b17660
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200721T110000Z
DTEND:20200722T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:130eb4ad-a2ad-4e22-b8d3-855e40f8fe32
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200722T110000Z
DTEND:20200723T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:402aaeea-3dfd-4ac7-8c7e-63135b310141
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200723T110000Z
DTEND:20200724T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
BEGIN:VEVENT
UID:f27063b9-68bf-4410-806f-74fc4b55a927
DTSTAMP:20191212T084613Z
CREATED:20190905T140002Z
DESCRIPTION:
DTSTART:20200724T110000Z
DTEND:20200725T000000Z
LAST-MODIFIED:20190909T150001Z
LOCATION:
SUMMARY:PiTP 2020
URL:https://www.ias.edu/node/104096
END:VEVENT
END:VCALENDAR