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UID:31636561-3761-4362-b632-366335323661
X-WR-TIMEZONE:UTC
X-WR-CALNAME:IAS Physics
BEGIN:VEVENT
UID:35633737-6337-4133-b934-343839626535
DTSTAMP:20240519T022023Z
CREATED:20240105T161914Z
DESCRIPTION:Topic: Many-Body Localization\n\nSpeakers: David Huse
DTSTART:20240221T160000Z
DTEND:20240221T171500Z
LAST-MODIFIED:20240202T191951Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Physics Group Meeting
URL:https://www.ias.edu/sns/events/ias-physics-group-meeting-58
END:VEVENT
BEGIN:VEVENT
UID:62623164-3733-4234-a336-313661323664
DTSTAMP:20240519T022023Z
CREATED:20240209T204642Z
DESCRIPTION:Topic: On Generalized Lieb-Schultz-Mattis Theorems for Quantum
Spin Chains\n\nSpeakers: Nikita A. Sopenko\n\nABSTRACT: I will review the
operator algebraic formalism that allows\nto work with quantum spin system
s directly in the thermodynamic limit.\nI will explain how this formalism
can be used to prove generalized\nLieb-Schultz-Mattis theorems that give c
onstraints on the entanglement\nstructure of ground states of 1d spin chai
ns with anomalous\nsymmetries.
DTSTART:20240226T160000Z
DTEND:20240226T170000Z
LAST-MODIFIED:20240221T153828Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS CMT/QFT Group Meeting
URL:https://www.ias.edu/sns/events/ias-cmtqft-group-meeting-6
END:VEVENT
BEGIN:VEVENT
UID:63313036-3935-4735-a437-396232653061
DTSTAMP:20240519T022023Z
CREATED:20240216T154510Z
DESCRIPTION:Topic: Scattering Theory and Infrared Divergences\n\nSpeakers:
Holmfridur Hannesdottir\n\nABSTRACT: How are infrared divergences related
to the Shapiro time\ndelay in GR? In this pedagogical lecture aimed at gra
duate students\,\nwe will study the physics of infrared divergences and th
eir imprint on\nscattering amplitudes. We will mostly work in non-relativi
stic quantum\nmechanics\, which provides a simplified setting for understa
nding the\nphysics. Towards the end we will discuss additional features an
d\ncomplications that arise in quantum field theory.
DTSTART:20240227T193000Z
DTEND:20240227T210000Z
LAST-MODIFIED:20240223T165247Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Amplitudes Group Meeting
URL:https://www.ias.edu/sns/events/ias-amplitudes-group-meeting-38
END:VEVENT
BEGIN:VEVENT
UID:62393738-6164-4566-a532-643431666638
DTSTAMP:20240519T022023Z
CREATED:20240223T170908Z
DESCRIPTION:Topic: Cauchy Slice Holography\n\nSpeakers: Aron Wall\n\nABSTRA
CT: This will be an informal presentation / discussion of the\nbasics of h
olographic theories that live on Cauchy slices\n(arXiv:2204.00591)\, which
can be constructed by the TTbar\ndeformation. Please feel free to bring
in questions and I will try\nto dynamically adapt my presentation in respo
nse.
DTSTART:20240229T160000Z
DTEND:20240229T170000Z
LAST-MODIFIED:20240226T202438Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-13
END:VEVENT
BEGIN:VEVENT
UID:34316235-6366-4263-b730-393662363038
DTSTAMP:20240519T022023Z
CREATED:20230728T194959Z
DESCRIPTION:Topic: Tensor Model for 3d Gravity\n\nSpeakers: Daniel Jafferis
\n\nABSTRACT: I will describe a double scaled matrix and tensor integral\n
whose Feynman diagrams can be organized in a 3d topological expansion\nwhi
ch agrees term by term with partition functions of 3d gravity. The\nintegr
al is taken over CFT2 data\, and the limiting potential imposes\nbootstrap
constraints. The conjecture that the result is precisely the\nsum over to
pology of 3d gravity implies infinitely many\ncombinatorial/topological re
lations on gluings of 3-manifolds. I will\nalso speculate on some aspects
of the non-perturbative completion of\nthe topological expansion.
DTSTART:20240301T160000Z
DTEND:20240301T171500Z
LAST-MODIFIED:20240223T142139Z
LOCATION:Bloomberg Lecture Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-70
END:VEVENT
BEGIN:VEVENT
UID:34656131-6466-4638-b031-623739633033
DTSTAMP:20240519T022023Z
CREATED:20240226T164423Z
DESCRIPTION:Topic: In Search of an Organizing Principle for Quantum Hall Sy
stems\n\nSpeakers: Gerardo Ortiz\n\nABSTRACT: I will describe connections
between ground states of quantum\nHall Hamiltonians with multiple-Landau-l
evel orbitals\, whose\nexcitations display either Abelian or non-Abelian b
raiding\nstatistics\, and (non-holomorphic) symmetric polynomials. In the
\ncase of two-body interactions\, these represent parton\nstates. The emer
gent Entangled Pauli Principle (EPP)\, which defines\nthe “DNA” of the qua
ntum Hall fluid state\, is behind the exact\ndetermination of the topologi
cal characteristics of those vacua\,\nincluding charge and braiding statis
tics of excitations\,\nand effective edge theory descriptions. This DNA ad
mits\na tensor network structure of finite bond dimension that\nemerges vi
a root level entanglement and encodes all universal\nproperties of the flu
id.
DTSTART:20240304T160000Z
DTEND:20240304T170000Z
LAST-MODIFIED:20240226T164706Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS CMT/QFT Group Meeting
URL:https://www.ias.edu/sns/events/ias-cmtqft-group-meeting-7
END:VEVENT
BEGIN:VEVENT
UID:35313230-6133-4538-b266-373335303866
DTSTAMP:20240519T022023Z
CREATED:20240216T140319Z
DESCRIPTION:Topic: S-matrix Positivity without Lorentz Invariance: A Case S
tudy\n\nSpeakers: Ioanna Kourkoulou\n\nABSTRACT: In this work we attempt t
o understand the analytic structure\nof amplitudes in theories with broken
Lorentz invariance. To this end\,\nwe use as an example a UV complete mod
el for relativistic superfluids\n- a complex scalar theory with quartic in
teractions at finite density.\nWith a focus on 2 → 2 processes in center-o
f-mass configurations we\nfind a few interesting properties\, including a
new branch cut as a\nresult of the theory’s non-analytic dispersion relati
ons. While our\nresults are model-dependent\, we hope to understand which
of our\nfindings are related to basic physical properties\, and how they m
ay be\nrelevant to other Lorentz-breaking systems.
DTSTART:20240305T193000Z
DTEND:20240305T210000Z
LAST-MODIFIED:20240228T200049Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Amplitudes Group Meeting
URL:https://www.ias.edu/sns/events/ias-amplitudes-group-meeting-37
END:VEVENT
BEGIN:VEVENT
UID:38306238-3936-4838-b730-383362306464
DTSTAMP:20240519T022023Z
CREATED:20230728T193944Z
DESCRIPTION:Topic: Superstring Partition Functions in AdS3\n\nSpeakers: Muk
und Rangamani\n\nABSTRACT: I will describe the one-loop partition function
for strings\npropagating on AdS3 geometries with NS-NS flux (for generic
values of\nAdS radius in string units). The essential ingredients that go
into\nthis analysis have been known for a while. The goal will be to\norga
nize the result to facilitate comparison to semiclassical gravity.\nI will
illustrate the match with the low-lying supergravity spectrum\,\nand high
light subtleties that arise along the way.
DTSTART:20240311T183000Z
DTEND:20240311T193000Z
LAST-MODIFIED:20240304T142204Z
LOCATION:Bloomberg Lecture Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-64
END:VEVENT
BEGIN:VEVENT
UID:31316463-3565-4433-a634-316335346363
DTSTAMP:20240519T022023Z
CREATED:20240308T163011Z
DESCRIPTION:Topic: Algebraic Observational Cosmology\n\nSpeakers: Jonah Kud
ler-Flam\n\nABSTRACT: I will discuss ongoing work on understanding the alg
ebra of\ngravitationally-dressed observables and generalized entropy in ge
neric\nspacetimes. Special attention will be paid to spacetimes that\nunde
rwent an inflationary era in the far past.
DTSTART:20240314T150000Z
DTEND:20240314T160000Z
LAST-MODIFIED:20240308T175232Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-15
END:VEVENT
BEGIN:VEVENT
UID:31323136-3332-4335-b135-366133373537
DTSTAMP:20240519T022023Z
CREATED:20240226T173732Z
DESCRIPTION:Topic: The Cosmological CPT Theorem\n\nSpeakers: Ayngaran Thava
nesan\n\nABSTRACT: In the original CPT theorem one is restricted to flat s
pace\nand is unable to make converse statements. In this talk I will show
\nhow we can reformulate the CPT theorem using a symmetry argument and\nge
neralise it to beyond flat space. This in turn allows us to make a\nnon-pe
rturbative statement of unitarity in de Sitter. I will show this\napplies
to the de Sitter wavefunction studied in the cosmology\nliterature and fin
ally comment on the implications for our universe\nand quantum gravity.
DTSTART:20240321T150000Z
DTEND:20240321T160000Z
LAST-MODIFIED:20240315T124955Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-14
END:VEVENT
BEGIN:VEVENT
UID:31646235-6634-4133-a131-303565376339
DTSTAMP:20240519T022023Z
CREATED:20240321T125744Z
DESCRIPTION:Topic: Topology and Disorder in Driven Quantum Systems\n\nSpeak
ers: Adrian Culver\n\nABSTRACT: Driven systems can exhibit new behaviors b
eyond what is\npossible in equilibrium. We focus on non-dissipative dynami
cs of free\nfermions in disordered systems\, starting with one-dimensional
drives\nwith chiral symmetry. Eigenstates of undriven systems in one dime
nsion\nare generically Anderson-localized by any amount of disorder\; howe
ver\,\nwe obtain [1] a universal localization-delocalization transition wh
en\nthe drive is topologically nontrivial.\n\nWe then broaden our scope to
consider the topological classification\nof unitary operators\, which cor
respond to discrete-time evolution. A\nbasic distinction arises: while ope
rators corresponding to physical\ntime evolution are local\, only topologi
cally trivial operators can be\ngenerated by a local\, time-dependent Hami
ltonian. We define\ntopological equivalence up to a locally generated unit
ary\, and we\nclassify free-fermion unitaries (in all spatial dimensions a
nd\nAltland-Zirnbauer symmetry classes) on this basis by showing that\nequ
ivalence up to a locally generated unitary is identical to homotopy\nequiv
alence [2].\n\n[1] A.C.\, P. Sathe\, A. Brown\, F. Harper\, and R. Roy\, U
niversal\nlocalization-delocalization transition in chirally-symmetric Flo
quet\ndrives\, arXiv:2310.20696\n\n[2] X. Liu\, A.C.\, F. Harper\, and R.
Roy\, Classification of Unitary\nOperators by Local Generatability\, arXiv
:2308.02728
DTSTART:20240325T150000Z
DTEND:20240325T160000Z
LAST-MODIFIED:20240321T130049Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS CMP/QFT Group Meeting
URL:https://www.ias.edu/sns/events/ias-cmpqft-group-meeting
END:VEVENT
BEGIN:VEVENT
UID:39396437-3166-4133-a336-623634303233
DTSTAMP:20240519T022023Z
CREATED:20240315T141421Z
DESCRIPTION:Topic: A tale of two elliptic curves: The eps-form DEQ for the
5-mass kite\n\nSpeakers: Andrzej Pokraka
DTSTART:20240326T183000Z
DTEND:20240326T200000Z
LAST-MODIFIED:20240321T131244Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Amplitudes Group Meeting
URL:https://www.ias.edu/sns/events/ias-amplitudes-group-meeting-40
END:VEVENT
BEGIN:VEVENT
UID:32623565-6236-4430-a262-376332316265
DTSTAMP:20240519T022023Z
CREATED:20240326T153803Z
DESCRIPTION:Topic: General Discussion of Recent Papers
DTSTART:20240328T150000Z
DTEND:20240328T160000Z
LAST-MODIFIED:20240326T153850Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-17
END:VEVENT
BEGIN:VEVENT
UID:62366264-3831-4535-b466-646466633832
DTSTAMP:20240519T022023Z
CREATED:20230728T195214Z
DESCRIPTION:Topic: Multipartite Edge Modes and Tensor Networks\n\nSpeakers:
Chris Akers\n\nABSTRACT: Holographic tensor networks model AdS/CFT\, but
so far they\nhave been limited by involving only systems that are very dif
ferent\nfrom gravity. Unfortunately\, we cannot straightforwardly discreti
ze\ngravity to incorporate it\, because that would break diffeomorphism\ni
nvariance. In this talk I will present a resolution\, based on\nupcoming w
ork. We construct a tensor network with new gravity-like\nproperties\, and
which does not suffer from the 'commuting areas'\nproblem of other tensor
networks.
DTSTART:20240329T150000Z
DTEND:20240329T161500Z
LAST-MODIFIED:20240321T151134Z
LOCATION:Wolfensohn Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-71
END:VEVENT
BEGIN:VEVENT
UID:33653734-6131-4264-b533-303364666266
DTSTAMP:20240519T022023Z
CREATED:20240206T194136Z
DESCRIPTION:Topic: Gravitational Wave Measurements with Pulsar Timing Array
s\n\nSpeakers: Gabriela Sato-Polito\n\nABSTRACT: Pulsar timing arrays (PTA
s) consist of a set of regularly\nmonitored millisecond pulsars with extre
mely stable rotational\nperiods. The arrival time of pulses can be altered
by the passage of\ngravitational waves (GWs) between them and the Earth\,
thus serving as\na galaxy-wide GW detector. Evidence for the first detect
ion of\nlow-frequency (~nHz) gravitational waves has recently been reporte
d\nacross multiple PTA collaborations\, opening a new observational window
\ninto the Universe. Although the origin of the GW signal is yet to be\nde
termined\, the dominant sources are expected to be inpiralling\nsupermassi
ve black holes (SMBHs). I will introduce how this\nmeasurement works\, wha
t we can potentially learn from it\, and a recent\nwork comparing the obse
rved GW background with its predicted value.
DTSTART:20240403T150000Z
DTEND:20240403T161500Z
LAST-MODIFIED:20240329T134424Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Physics Group Meeting
URL:https://www.ias.edu/sns/events/ias-physics-group-meeting-60
END:VEVENT
BEGIN:VEVENT
UID:35656439-3262-4538-b565-386233386233
DTSTAMP:20240519T022023Z
CREATED:20240308T163100Z
DESCRIPTION:Topic: Decoherence of Quantum Superpositions Due to Black Holes
vs. Ordinary Matter\n\nSpeakers: Anna Biggs\n\nABSTRACT: Recently it has
been shown that black holes decohere quantum\nsuperpositions in their exte
rior\, and suggested that this may be of\nfundamental importance for their
quantum\ndescription [arXiv:2205.06279\, arXiv:2301.00026\, arXiv:2311.11
461]. \nA central “dogma” in the modern study of black holes is that\, whe
n\nviewed from the outside\, a black hole is described by an ordinary\,\nu
nitarily evolving quantum system. In this talk we will replace the\nblack
hole by an ordinary quantum system and isolate the properties of\nthe quan
tum system that are responsible for the decoherence effect.\nThe effect bo
ils down to the ability of the object to absorb low\nfrequency fields. Thi
s will also allow us to compare the magnitude of\nthe decoherence effects
due to black holes versus more ordinary\nquantum systems. We will provide
some examples of matter objects which\nare comparable to black holes with
respect to the absorption of soft\nphotons and gravitons.
DTSTART:20240404T150000Z
DTEND:20240404T160000Z
LAST-MODIFIED:20240329T151013Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-16
END:VEVENT
BEGIN:VEVENT
UID:38343030-6230-4132-a162-303633663938
DTSTAMP:20240519T022023Z
CREATED:20240405T154146Z
DESCRIPTION:Topic: Some Comments on the Non-Perturbative Bulk Hilbert Space
of JT Gravity\n\nSpeakers: Henry Lin\n\nABSTRACT: I will give an informal
discussion of the bulk Hilbert space\nof JT gravity with and without matt
er\, based on 2403.08696\n[https://arxiv.org/abs/2403.08696].
DTSTART:20240410T150000Z
DTEND:20240410T160000Z
LAST-MODIFIED:20240405T161818Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-18
END:VEVENT
BEGIN:VEVENT
UID:38396562-3563-4565-b461-386130326231
DTSTAMP:20240519T022023Z
CREATED:20230728T195340Z
DESCRIPTION:Topic: The Miura Operator is an R-matrix\, via Intersecting Bra
nes\n\nSpeakers: Nathan Haouzi\n\nABSTRACT: The Miura transformation is a
powerful formalism to\nconstruct generators of vertex operator algebras in
free field\nrepresentation. In this talk\, I will explain that Miura oper
ators are\nR-matrices of a certain quantum algebra\, and comment on physic
al\nimplications. I will also describe how to derive this picture from the
\nstudy of intersecting branes in (twisted) M-theory\, compactified on a\n
torus. Based on joint work with Saebyeok Jeong.
DTSTART:20240412T150000Z
DTEND:20240412T161500Z
LAST-MODIFIED:20240405T202348Z
LOCATION:Bloomberg Lecture Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-73
END:VEVENT
BEGIN:VEVENT
UID:30306530-3739-4138-b535-323732316664
DTSTAMP:20240519T022023Z
CREATED:20230728T194209Z
DESCRIPTION:Topic: Staggered Bosons\, Kahler Dirac Bosons and Supersymmetry
on the Lattice\n\nSpeakers: David Berenstein\n\nABSTRACT: I will describe
constructions of lattice field theories that\nassign a single bosonic var
iable to each site\, rather a conjugate pair\nx\,p. The information to rea
lize a non-trivial dynamics is realized by\nnon-trivial Poisson brackets b
etween nearest neighbors. The\nconstruction is similar to staggered fermio
ns in 1+1 dimensions. \n\nI will show how this construction readily leads
to critical field\ntheories in various dimensions and realizes naturally c
ertain\nnon-invertible symmetries on the lattice fied theory. A more gener
al\nversion can be used on triangulations of manifolds\, where the Poisson
\nbracket utilizes the homology chain complex of the triangulation. I\nwi
ll show that when coupled to fermions this construction readiy\ngives ris
e to a supersymmetric Hamiltonian where the fermions are\nrealized as Kahl
er-Dirac fermions.
DTSTART:20240415T183000Z
DTEND:20240415T193000Z
LAST-MODIFIED:20240408T125357Z
LOCATION:Bloomberg Lecture Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-60
END:VEVENT
BEGIN:VEVENT
UID:63323232-3833-4130-a436-383563613630
DTSTAMP:20240519T022023Z
CREATED:20240307T164558Z
DESCRIPTION:Topic: The Regge Bootstrap\, from Linear to non-Linear Trajecto
ries\n\nSpeakers: Piotr Tourkine\n\nABSTRACT: Meromorphic amplitudes are t
he simplest non-trivial\nscattering amplitudes. They describe the exchange
of infinitely many\nhigher spin resonances in theories like string theory
and large N\ngauge theories. Yet\, despite being very simple objects\, th
eir\nnumerical bootstrap is challenging due to slow convergence of the\nin
finite sums over resonances.\n\nIn this talk I will present the content of
a recent paper where we\nmanaged to implement numerically a linear bootst
rap program that allow\nus to deform scattering amplitudes\, starting from
the Veneziano\namplitude for open strings. The bootstrap relies on Regge
theory. In\nthis talk I’ll explain the basics of the bootstrap: how we app
ly\ncrossing symmetry\, (the trickiest aspect)\, and show how it can be us
ed\nto construct amplitude with phenomenological features of gauge\ntheori
es. I’ll also comment on a surprising property of\n“super-unitarity” that
we discovered for the Veneziano amplitude.
DTSTART:20240416T183000Z
DTEND:20240416T200000Z
LAST-MODIFIED:20240410T193108Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Amplitudes Group Meeting
URL:https://www.ias.edu/sns/events/ias-amplitudes-group-meeting-39
END:VEVENT
BEGIN:VEVENT
UID:62303536-6335-4435-a265-343165383334
DTSTAMP:20240519T022023Z
CREATED:20240410T133600Z
DESCRIPTION:Topic: A Compendium of Logarithmic Corrections in AdS/CFT\n\nSp
eakers: Nikolay Bobev\n\nABSTRACT: I will discuss the log(N) corrections t
o the Euclidean\ngravitational path integral in the context of the AdS/CFT
\ncorrespondence for 3d SCFTs arising from N M2-branes. These\ncorrections
can be computed in 4d gravity using heat kernel\ntechniques. For suitable
ABJM-like 3d SCFTs with extended\nsupersymmetry the gravitational results
agree with QFT calculations\nperformed using supersymmetric localization.
These results have\nimplications for black holes in AdS_4 which I will br
iefly discuss. I\nwill also make some speculative comments on how our resu
lts may lead\nto new constraints on general EFTs coupled to gravity in AdS
. Based on\n2312.08909.
DTSTART:20240418T150000Z
DTEND:20240418T160000Z
LAST-MODIFIED:20240410T191041Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-19
END:VEVENT
BEGIN:VEVENT
UID:62623561-3561-4033-b733-346637376233
DTSTAMP:20240519T022023Z
CREATED:20240412T125646Z
DESCRIPTION:Topic: Lattice Realization of Topological Defects in 2D Conform
al Field Theories (CFTs)\n\nSpeakers: Madhav Sinha\n\nABSTRACT: Topologica
l defect lines in 2D CFTs have found resurgence in\nthe context of categor
ical symmetries. In this talk\, I will present\nthe lattice realization of
these for unitary Minimal Models. I will\nuse Spin chains\, such as Trans
verse Field Ising and Three-State Potts\nModel\, and Integrable Restricted
Solid-on-Solid (RSOS) models for\nthese constructions. I will compare kno
wn defect line operators in\nSpin chains\, RSOS models\, and Anyonic chain
s. Further\, I will discuss\nthe lattice realization of a defect line whic
h was previously unknown.\n\nThe talk will be based on 2310.19703\n[https:
//arxiv.org/abs/2310.19703] and other works in preparation\,\ndone with An
anda Roy\, Fei Yan\, Hubert Saleur\, Linnea Grans-Samuelsson\,\nand Thiago
Silva Tavares.
DTSTART:20240422T150000Z
DTEND:20240422T160000Z
LAST-MODIFIED:20240412T125958Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS CMT/QFT Group Meeting
URL:https://www.ias.edu/sns/events/ias-cmtqft-group-meeting-8
END:VEVENT
BEGIN:VEVENT
UID:36616336-3236-4430-b830-373962666136
DTSTAMP:20240519T022023Z
CREATED:20230728T194319Z
DESCRIPTION:Topic: ' “Unnecessary” Quantum Critical Points in Condensed Mat
ter and Field Theory'\n\nSpeakers: Senthil Todadri\n\nABSTRACT: Quantum cr
itical points usually separate two distinct phases\nof matter. Here I will
discuss a class of 'unnecessary' quantum\ncritical points that lie within
a single phase of matter (much like\nthe liquid-gas transition\, except t
hat they are continuous) so that\nthere is a path that avoids them. First
found in critical non-abelian\ngauge theories\, there are by now a number
of simpler examples of such\nquantum critical points. In this talk\, I wil
l focus on the conformal\nfixed point of massless QED3. I will show that
this theory describes\nan unnecessary quantum critical point living inside
the most familiar\nNeel antiferromagnetic phase of spin-1/2 square lattic
e magnets.
DTSTART:20240422T183000Z
DTEND:20240422T193000Z
LAST-MODIFIED:20240416T141212Z
LOCATION:Bloomberg Lecture Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-67
END:VEVENT
BEGIN:VEVENT
UID:35353563-3339-4634-b564-366465316462
DTSTAMP:20240519T022023Z
CREATED:20240304T162739Z
DESCRIPTION:Topic: On a $Z_3$ Topological Term in 10d Heterotic String Theo
ries\n\nSpeakers: Yuji Tachikawa\n\nABSTRACT: I will compare the gravitati
onal sectors of two 10d\nheterotic string theories\, with E8 x E8 and Spin
(32)/$Z_2$ gauge\ngroups\, and show that they differ by a subtle $Z_3$-val
ued topological\nterm. I also discuss its relation to the mathematics of t
opological\nmodular forms. This is based on my collaboration\nhttps://arxi
v.org/abs/2403.08861 [https://arxiv.org/abs/2403.08861]\nwith Hao Zhang.\n
\n
DTSTART:20240424T150000Z
DTEND:20240424T161500Z
LAST-MODIFIED:20240410T134111Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Physics Group Meeting
URL:https://www.ias.edu/sns/events/ias-physics-group-meeting-61
END:VEVENT
BEGIN:VEVENT
UID:30643435-6665-4837-b635-343763613433
DTSTAMP:20240519T022023Z
CREATED:20230728T195521Z
DESCRIPTION:Topic: Aspects of Topological Symmetry\, Holography\, and Brane
s \n\nSpeakers: Ibrahima Bah\n\nABSTRACT: In this talk I will discuss holo
graphic duals of topological\noperators. At low energy sugra\, they can b
e realized by Page charge\nassociated to Gauss law constraints. In the UV
string theory\,\ntopological operators can be characterized by various bra
ne\nconfigurations. This provides a way of exploring generalized\nsymmetri
es with dynamical bulk physics.
DTSTART:20240426T150000Z
DTEND:20240426T161500Z
LAST-MODIFIED:20240419T133228Z
LOCATION:Bloomberg Lecture Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-68
END:VEVENT
BEGIN:VEVENT
UID:65643434-6264-4630-a434-346233633865
DTSTAMP:20240519T022023Z
CREATED:20240426T144419Z
DESCRIPTION:Topic: Topological Order in Mixed-States\n\nSpeakers: Ramanjit
Sohal\n\nABSTRACT: Discussion of recent work on topological order in\nmixe
d-states\, based on https://arxiv.org/abs/2403.13879
DTSTART:20240429T150000Z
DTEND:20240429T160000Z
LAST-MODIFIED:20240426T144529Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS CMP/QFT Group Meeting
URL:https://www.ias.edu/sns/events/ias-cmpqft-group-meeting-0
END:VEVENT
BEGIN:VEVENT
UID:37613635-3166-4263-a663-623037633737
DTSTAMP:20240519T022023Z
CREATED:20240429T125649Z
DESCRIPTION:Topic: Magnetic Quivers and Phase Diagrams\n\nSpeakers: Amihay
Hanany\n\nABSTRACT: Higgs branches in theories with 8 supercharges change
as\none tunes the gauge coupling to critical values.\n\nThis talk will foc
us on six dimensional (0\,1) supersymmetric theories\nin studying the diff
erent phenomena associated with such a change.\nBased on a Type IIA brane
system\, involving NS5 branes\, D6 branes and\nD8 branes\, one can derive
a 'magnetic quiver” which enables the\nconstruction of the Higgs branch us
ing a “magnetic construction”\nor as a more commonly known object “3d N=4
Coulomb branch”.\n\nInterestingly enough\, the magnetic construction opens
a window to a\nnew set of Higgs branches which were not available using t
he well\nstudied method of hyperkähler quotient.\n\nIt turns out that exce
ptional global symmetries are fairly common in\nthe magnetic construction\
, and few examples will be shown. In all such\ncases there are strongly co
upled theories where Lagrangian description\nfails\, and the magnetic cons
truction is helpful in finding properties\nof the theory.\n\nEach Higgs br
anch can be characterized by a phase diagram which\ndescribes the differen
t sets of massless fields around vacua. We will\nuse such diagrams to stud
y how Higgs branches change.\n\nIf time permits we will show an interestin
g exceptional sequence\nconsisting of SU(3) — G2 — SO(7).\n\n \n\n
DTSTART:20240430T180000Z
DTEND:20240430T191500Z
LAST-MODIFIED:20240429T131711Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Special High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-special-high-energy-theory-seminar-7
END:VEVENT
BEGIN:VEVENT
UID:61356339-6238-4863-b761-653639343736
DTSTAMP:20240519T022023Z
CREATED:20240304T164252Z
DESCRIPTION:Topic: Tidal Effects of Compact Objects from Theory to Observat
ion\n\nSpeakers: Zihan Zhou\n\nABSTRACT: Tidal deformabilities serve as an
effective tool to study\nthe structures of compact objects. In the first
part of the talk\, I\nwill present how the worldline effective field theor
y (EFT) can be\napplied to examine the tidal responses of compact objects.
This\napproach offers a robust framework for parameterizing tidal effects
\,\nenabling precise data analysis of observations from the current\nGravi
tational-wave Transient Catalog (GWTC). In the second half of\nthe talk\,
I will discuss how we can use the gravitational Raman\nscattering amplitud
es to understand the tidal effects. Specifically\,\nfor black holes (BHs)\
, this amplitude in the partial wave basis can be\nexactly solved using bl
ack hole perturbation theory. I will discuss\nthe mathematical structure o
f this amplitude and demonstrate our\nprogress towards achieving high-prec
ision studies of tidal effects.
DTSTART:20240501T150000Z
DTEND:20240501T161500Z
LAST-MODIFIED:20240426T180143Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Physics Group Meeting
URL:https://www.ias.edu/sns/events/ias-physics-group-meeting-62
END:VEVENT
BEGIN:VEVENT
UID:62326664-6233-4763-b562-343834306330
DTSTAMP:20240519T022023Z
CREATED:20240426T201827Z
DESCRIPTION:Topic: Relative State-Counting for Semiclassical Black Holes\n
\nSpeakers: Chris Akers
DTSTART:20240502T150000Z
DTEND:20240502T160000Z
LAST-MODIFIED:20240426T201938Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-20
END:VEVENT
BEGIN:VEVENT
UID:30396362-3430-4333-a639-636563623339
DTSTAMP:20240519T022023Z
CREATED:20240426T203026Z
DESCRIPTION:Topic: The Additivity Anomaly in Holographic CFTs\n\nSpeakers:
Sam Leutheusser\n\nABSTRACT: I will discuss consequences of the loss of th
e\n“additivity” property of QFT in the large N limit of Holographic\nCFTs.
I will demonstrate how the additivity anomaly underlies the\nsuccess of q
uantum error correcting code models of holography.\nFinally\, I will argue
that the connected wedge theorems (CWTs) of May\,\nPenington\, Sorce\, an
d Yoshida can be re-phrased in terms of the\nadditivity anomaly\, allowing
for the definition of a generalized\nscattering region for which a genera
lization of the CWTs can be\nformulated such that both the theorem and its
converse should hold.\n\nThis will be an informal discussion based on wor
k in progress with\nHong Liu.
DTSTART:20240509T150000Z
DTEND:20240509T160000Z
LAST-MODIFIED:20240502T192300Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-21
END:VEVENT
BEGIN:VEVENT
UID:33366235-3530-4565-b265-663936316234
DTSTAMP:20240519T022023Z
CREATED:20230728T195650Z
DESCRIPTION:Topic: Algebra of the Infrared with Twisted Masses\n\nSpeakers:
Ahsan Z Khan\n\nABSTRACT: The Gaiotto-Moore-Witten 'Algebra of the Infrar
ed' allows\none to construct the category of supersymmetric boundary condi
tions\nfor a wide class of massive N=(2\,2) QFTs in two dimensions. In\npa
rticular\, it applies to N=(2\,2) QFTs defined by a Morse\nsuperpotential
W. However\, the formalism breaks down if we consider an\nN=(2\,2) QFT wit
h a non-trivial twisted mass\, or if the one-form dW is\nnot globally exac
t and has a non-trivial period. Many of the N=(2\,2)\nQFTs of interest are
exactly of this type. In this talk I will show\nhow one can generalize th
e GMW framework to include such models\,\nillustrating the basic idea in a
simple toy model.
DTSTART:20240510T150000Z
DTEND:20240510T161500Z
LAST-MODIFIED:20240503T134810Z
LOCATION:Bloomberg Lecture Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-69
END:VEVENT
BEGIN:VEVENT
UID:34666332-6630-4365-a431-343865366365
DTSTAMP:20240519T022023Z
CREATED:20240503T150921Z
DESCRIPTION:Topic: Causality Constraints on Gravity and Large-N Matters\n\n
Speakers: Yue-Zhou Li\n\nABSTRACT: In this talk\, we'll review the bootstr
ap method that uses\nunitarity and causality (analyticity + crossing) to c
onstrain\nlow-energy effective field theories (EFTs)\, especially those in
cluding\ngravitational couplings. This method allows us to put numerical b
ounds\non the gravitational EFTs\, thus sharpening the earlier parametric
\narguments. To understand the nature of the EFT cut-off\, we then\nconsid
er the scenario where Einstein gravity coupled to a large-N\nnumber of low
-spin matters. At low energy\, this procedure involves\nsumming over those
loops that survive by balancing the large-N limit\nwith the gravitational
weak coupling limit. By analyzing phase shifts\,\nwe find it impossible f
or low-spin matter loops to be the UV\ncompletion of gravity\, thus provid
ing a sharp definition of the\nirrevocable EFT cut-off as the higher-spin
gap. We'll also show that\ncausality strongly constrains the higher-spin g
ap.\n\n
DTSTART:20240522T150000Z
DTEND:20240522T161500Z
LAST-MODIFIED:20240508T134051Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Physics Group Meeting
URL:https://www.ias.edu/sns/events/ias-physics-group-meeting-63
END:VEVENT
BEGIN:VEVENT
UID:31393239-6362-4639-a561-616330656336
DTSTAMP:20240519T022023Z
CREATED:20240429T162658Z
DESCRIPTION:Topic: Building Up Quantum Spacetimes with BCFT Legos\n\nSpeake
rs: Yikun Jiang\n\nABSTRACT: Is it possible to read off the quantum gravit
y dual of a CFT\ndirectly from its operator algebra? In this talk\, I will
present a\nstep-by-step recipe for building up 3D quantum spacetimes dual
to 2D\nCFTs\, synthesizing results and techniques from conformal bootstra
p\,\ntopological symmetries\, real-space tensor network renormalization\,
and\nthe asymptotics of quantum 6j symbols. Quantum Liouville theory serve
s\nas a simple and explicit example\, illustrating how the exact\nCFT/grav
itational path integral can be built up from triangulation and\nlocal piec
es of BCFT correlation functions\, which we call the ``BCFT\nLegos''. This
is essentially a tensor network that admits an\ninterpretation of a state
-sum of a 3D topological theory constructed\nwith quantum 6j symbols of Uq
(SL(2\,R)) with non-trivial boundary\nconditions\, and it reduces to a sum
over 3D geometries weighted by the\nEinstein-Hilbert action to leading or
der in large c. The triangulation\ncoincides with producing a network of g
eodesics in the AdS bulk\, which\ncan be changed making use of the pentago
n identity and orthogonality\ncondition satisfied by the 6j symbols\, and
arranged into a precise\nholographic tensor network. The constructive map
between gravity and\nCFT naturally and explicitly bridges local geometrica
l data\, algebraic\nstructures\, and quantum entanglement. I will also bri
efly discuss how\nthis approach can be used to study black hole physics\,
specifically by\nconsidering 3D BTZ black holes as Maldacena-Maoz wormhole
s to identify\nthe Hartle-Hawking state using the Liouville ZZ boundary st
ate\, and\nelucidate the connection to 2D JT gravity.
DTSTART:20240523T150000Z
DTEND:20240523T160000Z
LAST-MODIFIED:20240507T140148Z
LOCATION:Bloomberg Hall Physics Library
SUMMARY:IAS Quantum Aspects of Black Holes Group Meeting
URL:https://www.ias.edu/sns/events/ias-quantum-aspects-black-holes-group-me
eting-22
END:VEVENT
BEGIN:VEVENT
UID:35373231-6331-4163-b836-633032376565
DTSTAMP:20240519T022023Z
CREATED:20230728T195745Z
DESCRIPTION:Topic: 't Hooft Anomaly Detection in 2+1d Lattice Systems\n\nSp
eakers: Wilbur Shirley\n\nABSTRACT: I will discuss two methods for diagnos
ing ’t Hooft\nanomalies of internal symmetries in 2+1d lattice systems. An
omalous\nsymmetries of this kind arise naturally at the boundary of 3+1D\n
symmetry-protected topological phases\, and are known to be classified\nby
the group cohomology of the symmetry group. The first method is\npurely k
inematical: using only the form of the symmetry operators\nthemselves\, th
e anomaly cocycle is computed via a concrete procedure\nof operator trunca
tion and dimensional reduction. The second method is\ndynamical in nature\
, entailing a choice of Hamiltonian that\nspontaneously breaks the symmetr
y. The anomaly is exposed in the\nalgebraic structure of the ensuing domai
n wall excitations.
DTSTART:20240524T150000Z
DTEND:20240524T161500Z
LAST-MODIFIED:20240516T142212Z
LOCATION:Bloomberg Lecture Hall (IAS) & Zoom
SUMMARY:IAS High Energy Theory Seminar
URL:https://www.ias.edu/sns/events/ias-high-energy-theory-seminar-72
END:VEVENT
BEGIN:VEVENT
UID:30646362-3739-4430-a439-613366333363
DTSTAMP:20240519T022023Z
CREATED:20240419T162417Z
DESCRIPTION:Topic: Structures in the Non-Planar Sector of QCD\n\nSpeakers:
Giulio Gambuti\n\nABSTRACT: Scattering amplitudes can be used to probe the
all-orders\nstructure of gauge theories. Particularly rich is the non-pla
nar\nsector\, where physical phenomena such as quadrupole radiation and\nm
ulti-reggeon interactions appear. In this talk I will present\namplitudes
which offer a window on these structures within QCD and\nYang-Mills. I wil
l also describe how infrared divergences can be used\nto decompose the spa
ce of Feynman integrals and obtain more compact\nrepresentations of non-su
persymmetric amplitudes.
DTSTART:20240528T183000Z
DTEND:20240528T200000Z
LAST-MODIFIED:20240514T184345Z
LOCATION:Bloomberg Lecture Hall (IAS)
SUMMARY:IAS Amplitudes Group Meeting
URL:https://www.ias.edu/sns/events/ias-amplitudes-group-meeting-41
END:VEVENT
BEGIN:VEVENT
UID:63356538-3435-4135-b437-326562656130
DTSTAMP:20240519T022023Z
CREATED:20240509T134739Z
DESCRIPTION:ORGANIZERS:\n\nIgnacio Cirac\, _Max Planck Institute of Quantum
Optics_\nJuan Maldacena\, _Institute for Advanced Study_\nNathan Seiberg\
, _Institute for Advanced Study_\nUmesh Vazirani\, _University of Californ
ia at Berkeley_\nAvi Wigderson\, _Institute for Advanced Study_\n\nThese t
wo focus weeks will feature a couple of pedagogical lectures\neach day. Th
ese will cover topics such as experiments in quantum\ninformation\, tensor
networks\, quantum information theory\, unitary\ncomplexity and cryptogra
phy\, quantum algorithms\, complexity and\ngravity\, quantum information a
nd gravity\, chaos and gravity\,\nentanglement and the phases of matter\,
quantum simulation\, quantum\nerror correction and quantum probabilistical
ly checkable proofs\,\nclassical shadows\, holography and quantum informat
ion\, quantum\ninformation techniques in condensed matter physics\, quantu
m gases\,\napplications to quantum dynamics\, and generalized symmetries.
\n\nFor additional information\, please click here\n[https://www.ias.edu/s
ns/program-details-quantum-info-2024].
DTSTART:20240819T123000Z
DTEND:20240830T210000Z
LAST-MODIFIED:20240509T135418Z
LOCATION:
SUMMARY:Workshop on Quantum Information and Physics Focus Weeks
URL:https://www.ias.edu/sns/events/workshop-quantum-information-and-physics
-focus-weeks
END:VEVENT
BEGIN:VEVENT
UID:36656566-6635-4331-a237-613137633137
DTSTAMP:20240519T022023Z
CREATED:20231205T182810Z
DESCRIPTION:Organizers: Nima Arkani-Hamed\, June Huh\, Thomas Lam\, and Ber
nd\nSturmfels\n\nThis event aims to foster collaboration between mathemati
cians and\nphysicists. The focus will be on the intersection of combinator
ial\ngeometry and fundamental physics\, covering topics like scattering an
d\nstring amplitudes\, positive geometry\, Euler integrals\, and tropical
\nmoduli spaces. This workshop is a part of the special year Algebraic\nan
d Geometric Combinatorics.\n\nFor additional information\, please click he
re\n[https://www.ias.edu/mathematical-physics/combinatorics-fundamental-ph
ysics-workshop].
DTSTART:20241118T150000Z
DTEND:20241122T171500Z
LAST-MODIFIED:20240423T184859Z
LOCATION:
SUMMARY:Combinatorics of Fundamental Physics Workshop
URL:https://www.ias.edu/mathematical-physics/events/combinatorics-fundament
al-physics-workshop
END:VEVENT
END:VCALENDAR