BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Matthias Gaberdiel (ETH Zurich)
DTSTART:20210317T080000Z
DTEND:20210317T090000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/1
DESCRIPTION:Title: An exact AdS/CFT duality\nby Matthias Gaberdiel (ET
H Zurich) as part of BIMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:David Simmons-Duffin (Caltech)
DTSTART:20210322T070000Z
DTEND:20210322T080000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/2
DESCRIPTION:Title: Sharp Boundaries for the Swampland\nby David Simmon
s-Duffin (Caltech) as part of BIMSA Geometry and Physics Seminar\n\nAbstra
ct: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jim Halverson (Northeastern University)
DTSTART:20210512T020000Z
DTEND:20210512T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/4
DESCRIPTION:Title: Complexity\, Physics\, and Effective Theories of Deep L
earning 1 (canceled)\nby Jim Halverson (Northeastern University) as pa
rt of BIMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jim Halverson (Northeastern University)
DTSTART:20210517T020000Z
DTEND:20210517T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/5
DESCRIPTION:Title: Complexity\, Physics\, and Effective Theories of Deep L
earning 1\nby Jim Halverson (Northeastern University) as part of BIMSA
Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jim Halverson (Northeastern University)
DTSTART:20210519T020000Z
DTEND:20210519T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/6
DESCRIPTION:Title: Complexity\, Physics\, and Effective Theories of Deep L
earning 2\nby Jim Halverson (Northeastern University) as part of BIMSA
Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Wolfgang Lerche (CERN)
DTSTART:20210414T080000Z
DTEND:20210414T090000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/7
DESCRIPTION:Title: Fluxes\, Holomorphic Anomalies and Elliptic Genera in d
=4\nby Wolfgang Lerche (CERN) as part of BIMSA Geometry and Physics Se
minar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Zhenbin Yang (Stanford University)
DTSTART:20210526T020000Z
DTEND:20210526T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/8
DESCRIPTION:Title: Wormholes and Unitarity of Black Hole Evolution Process
\nby Zhenbin Yang (Stanford University) as part of BIMSA Geometry and
Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shouvik Datta (CERN)
DTSTART:20210510T080000Z
DTEND:20210510T090000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/9
DESCRIPTION:Title: Ensemble averaging and AdS3/CFT2\nby Shouvik Datta
(CERN) as part of BIMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andrew Strominger (Harvard University)
DTSTART:20210510T020000Z
DTEND:20210510T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/10
DESCRIPTION:Title: Progress on Flat Holography\nby Andrew Strominger
(Harvard University) as part of BIMSA Geometry and Physics Seminar\n\nAbst
ract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pawel Caputa (University of Warsaw)
DTSTART:20210602T080000Z
DTEND:20210602T090000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/11
DESCRIPTION:Title: Holographic Path Integral Optimization\nby Pawel C
aputa (University of Warsaw) as part of BIMSA Geometry and Physics Seminar
\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eva Silverstein (Stanford University)
DTSTART:20210616T020000Z
DTEND:20210616T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/12
DESCRIPTION:Title: Hyperbolic compactification of M theory and de Sitter
quantum gravity\nby Eva Silverstein (Stanford University) as part of B
IMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jim Halverson (Northeastern University)
DTSTART:20210524T020000Z
DTEND:20210524T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/13
DESCRIPTION:Title: Complexity\, Physics\, and Effective Theories of Deep
Learning 3\nby Jim Halverson (Northeastern University) as part of BIMS
A Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Djordje Radicevic (Brandeis University)
DTSTART:20210609T020000Z
DTEND:20210609T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/14
DESCRIPTION:Title: An Introduction to the Lattice-Continuum Correspondenc
e\nby Djordje Radicevic (Brandeis University) as part of BIMSA Geometr
y and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ken Kikuchi (YMSC)
DTSTART:20210928T030000Z
DTEND:20210928T040000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/15
DESCRIPTION:Title: Symmetry enhancement in RCFT\nby Ken Kikuchi (YMSC
) as part of BIMSA Geometry and Physics Seminar\n\nLecture held in BIMSA\,
1120.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xi Yin (Harvard University)
DTSTART:20211102T123000Z
DTEND:20211102T133000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/16
DESCRIPTION:Title: Uses of String Field Theory\nby Xi Yin (Harvard Un
iversity) as part of BIMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eliot Hijano (Princeton University)
DTSTART:20211026T000000Z
DTEND:20211026T010000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/17
DESCRIPTION:Title: Flat holography as a flat limit of AdS/CFT\nby Eli
ot Hijano (Princeton University) as part of BIMSA Geometry and Physics Sem
inar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Satoshi Yamaguchi (Osaka University)
DTSTART:20211116T030000Z
DTEND:20211116T040000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/18
DESCRIPTION:Title: Non-invertible topological defects in 4-dimensional $Z
_2$ pure lattice gauge theory\nby Satoshi Yamaguchi (Osaka University)
as part of BIMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xinan Zhou (KITS\, University of Chinese Academy of Sciences)
DTSTART:20211109T030000Z
DTEND:20211109T040000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/19
DESCRIPTION:Title: Gluon Scattering in AdS\nby Xinan Zhou (KITS\, Un
iversity of Chinese Academy of Sciences) as part of BIMSA Geometry and Phy
sics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hongliang Jiang (Queen Mary University of London)
DTSTART:20211123T080000Z
DTEND:20211123T090000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/20
DESCRIPTION:Title: Celestial OPEs: from string worldsheet to infinite War
d identities\nby Hongliang Jiang (Queen Mary University of London) as
part of BIMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/20/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Haoyu Sun (University of Texas at Austin)
DTSTART:20211228T030000Z
DTEND:20211228T040000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/21
DESCRIPTION:Title: (CANCELLED)\nby Haoyu Sun (University of Texas at
Austin) as part of BIMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Min-xin Huang (University of Science and Technology of China)
DTSTART:20211214T030000Z
DTEND:20211214T040000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/22
DESCRIPTION:Title: Bootstrapping Calabi-Yau Quantum Mechanics\nby Min
-xin Huang (University of Science and Technology of China) as part of BIMS
A Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/22/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jarah Evslin (Institute of Modern Physics)
DTSTART:20220224T083000Z
DTEND:20220224T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/23
DESCRIPTION:Title: An Introduction to Schrodinger Wave Functionals\nb
y Jarah Evslin (Institute of Modern Physics) as part of BIMSA Geometry and
Physics Seminar\n\n\nAbstract\nEach configuration in a quantum field theo
ry corresponds to a map from a space X of functions or bundles with sectio
ns to the space of complex numbers. These maps are called Schrodinger wave
functionals. They generalize wave functions in quantum mechanics\, which
are maps from a finite-dimensional manifold to the complex numbers. We rev
iew the main properties of wave functions and wave functionals in a series
of examples. We describe an embedding of X into this quantum configuratio
n space and argue that perturbative quantum field theory only probes a tub
ular neighborhood of its image\, but that the poorly understood global pro
perties of the quantum configuration space are relevant to the confinement
problem in supersymmetric QCD.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bartlomiej Czech (Institute for Advanced Study)
DTSTART:20220303T083000Z
DTEND:20220303T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/24
DESCRIPTION:Title: Holographic Cone of Average Entropies and Universality
of Black Holes\nby Bartlomiej Czech (Institute for Advanced Study) as
part of BIMSA Geometry and Physics Seminar\n\n\nAbstract\nThe holographic
entropy cone\, which identifies von Neumann entropies of CFT regions that
are consistent with a semiclassical bulk dual\, is currently known only u
p to n=5 regions. I explain that average entropies of p-partite subsystems
can be checked for consistency with a semiclassical bulk dual far more ea
sily\, for an arbitrary number of regions n. This analysis defines the "Ho
lographic Cone of Average Entropies" (HCAE). I conjecture the exact form o
f HCAE\, and find that it has the following properties: (1) HCAE is the si
mplest it could be\, namely it is a simplicial cone. (2) Its extremal rays
represent stages of thermalization (black hole formation). (3) In a time-
reversed picture\, the extremal rays of HCAE represent stages of unitary b
lack hole evaporation\, as stipulated by the island solution of the black
hole information paradox. (4) HCAE is bound by a novel\, infinite family o
f holographic entropy inequalities. (5) HCAE is the simplest it could be a
lso in its dependence on the number of regions n\, namely its bounding ine
qualities are n-independent. (6) In a precise sense I describe\, the bound
ing inequalities of HCAE unify (almost) all previously discovered holograp
hic inequalities and strongly constrain future inequalities yet to be disc
overed. I also sketch an interpretation of HCAE in terms of error correcti
on and the holographic Renormalization Group. The big lesson that HCAE see
ms to be teaching us is about the universality of black hole physics.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/24/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eoin Ó Colgáin (CQUeST)
DTSTART:20220317T020000Z
DTEND:20220317T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/25
DESCRIPTION:Title: Is Hubble constant a constant?\nby Eoin Ó Colgái
n (CQUeST) as part of BIMSA Geometry and Physics Seminar\n\n\nAbstract\nMo
dern cosmology rests upon the Cosmological Principle or FLRW paradigm\, na
mely the assumption that the Universe is isotropic and homogeneous at larg
e scales. Working within these assumptions\, we are witnessing a potential
5 sigma discrepancy in the Hubble constant H0 between early and late Un
iverse determinations. I will explain how this discrepancy may be an artif
act of a breakdown of FLRW at large scales. If true\, we're looking at pa
radigm shift in cosmology.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/25/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nicolai Reshetikhin (YMSC)
DTSTART:20220407T083000Z
DTEND:20220407T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/26
DESCRIPTION:Title: Superintegrable systems-I\nby Nicolai Reshetikhin
(YMSC) as part of BIMSA Geometry and Physics Seminar\n\n\nAbstract\nFirst
part of the talk is introduction to Hamiltonian integrability. In the seco
nd part of the talk their quantum counterparts will be introduced with som
e examples. Important class of examples is related to moduli spaces of con
nections over surfaces.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/26/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nicolai Reshetikhin (YMSC)
DTSTART:20220414T083000Z
DTEND:20220414T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/27
DESCRIPTION:Title: Superintegrable systems-II\nby Nicolai Reshetikhin
(YMSC) as part of BIMSA Geometry and Physics Seminar\n\n\nAbstract\nFirst
part of the talk is introduction to Hamiltonian integrability. In the sec
ond part of the talk their quantum counterparts will be introduced with so
me examples. Important class of examples is related to moduli spaces of co
nnections over surfaces.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/27/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nicolai Reshetikhin (YMSC)
DTSTART:20220421T083000Z
DTEND:20220421T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/28
DESCRIPTION:Title: Superintegrable systems-III\nby Nicolai Reshetikhi
n (YMSC) as part of BIMSA Geometry and Physics Seminar\n\n\nAbstract\nThe
talk will star with an overview of quatntum superintegrability of the spin
Calogero-Moser model. Then n-spin CM models will be introduced and it wil
l shown how they are related to two-dimensional Yang-Mills theory.\n\nZoom
ID: 361 038 6975 \npassword: BIMSA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/28/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Zohar Komargodski (SCGP)
DTSTART:20220505T020000Z
DTEND:20220505T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/29
DESCRIPTION:Title: Comments on Wilson Lines in Massless Gauge Theories\nby Zohar Komargodski (SCGP) as part of BIMSA Geometry and Physics Semin
ar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/29/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sergei Gukov (Caltech)
DTSTART:20220526T020000Z
DTEND:20220526T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/30
DESCRIPTION:Title: Interesting invariants and TQFTs from 3d-3d correspond
ence\nby Sergei Gukov (Caltech) as part of BIMSA Geometry and Physics
Seminar\n\n\nAbstract\nWe review recent progress in 3d-3d correspondence\
, with a focus on new topological invariants and on interesting topologica
l quantum field theories (TQFTs). In particular\, we discuss how this line
of development can help to bridge topology and quantum topology.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/30/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Yuji Tachikawa (IPMU)
DTSTART:20220428T020000Z
DTEND:20220428T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/31
DESCRIPTION:Title: On the absence of global anomalies of heterotic string
theories\nby Yuji Tachikawa (IPMU) as part of BIMSA Geometry and Phys
ics Seminar\n\n\nAbstract\nSuperstring theory as we know it started from t
he discovery by Green and Schwarz in 1984 that the perturbative anomalies
of heterotic strings miraculously cancel. But the cancellation of global a
nomalies of heterotic strings remained an open problem for a long time. \n
In this talk\, I would like to report how this issue was finally resolved
last year\, by combining two developments outside of string theory. Namely
\, on one hand\, the study of topological phases in condensed matter theor
y has led to our vastly improved understanding of the general form of glob
al anomalies. On the other hand\, the study of topological modular forms i
n algebraic topology allows us to constrain the data of heterotic worldshe
et theories greatly\, as far as their contributions to the anomalies are c
oncerned. Putting them together\, it is possible to show that global anoma
lies of heterotic strings are always absent.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/31/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eric Sharpe (Virginia tech.)
DTSTART:20220519T020000Z
DTEND:20220519T033000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/32
DESCRIPTION:Title: An introduction to decomposition\nby Eric Sharpe (
Virginia tech.) as part of BIMSA Geometry and Physics Seminar\n\n\nAbstrac
t\nIn this talk I will review work on `decomposition\,' a property of 2d t
heories with 1-form symmetries and\, more generally\, d-dim'l theories wit
h (d-1)-form symmetries. Decomposition is the observation that such quant
um field theories are equivalent to ('decompose into’) disjoint unions
of other QFTs\, known in this context as "universes.” Examples include
two-dimensional gauge theories and\norbifolds with matter invariant under
a subgroup of the gauge group. Decomposition explains and relates several
physical properties of these theories -- for example\, restrictions on al
lowed instantons arise as a "multiverse interference effect" between contr
ibutions from constituent universes. First worked out in 2006 as part of
efforts to understand string propagation on stacks\, decomposition has b
een the driver of a number of developments since. I will walk through gene
ral aspects of 2d gauge theories that exhibit decomposition\, dive into sp
ecifics in orbifold examples\, and as time permits\, discuss recent work i
n progress.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/32/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kostas Skenderis (University of Southampton)
DTSTART:20220609T083000Z
DTEND:20220609T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/33
DESCRIPTION:by Kostas Skenderis (University of Southampton) as part of BIM
SA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/33/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Wei Song (Tsinghua University)
DTSTART:20220616T083000Z
DTEND:20220616T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/34
DESCRIPTION:by Wei Song (Tsinghua University) as part of BIMSA Geometry an
d Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/34/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marcos Marino (Universite de Geneve)
DTSTART:20220602T083000Z
DTEND:20220602T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/35
DESCRIPTION:Title: Resurgence and quantum topology\nby Marcos Marino
(Universite de Geneve) as part of BIMSA Geometry and Physics Seminar\n\n\n
Abstract\nQuantum field theories and string theories often lead to perturb
ative series which encode geometric information. In this lecture I will a
rgue that\, in the case of complex Chern-Simons theory\, perturbative ser
ies secretly encode integer invariants\, related in some cases to BPS coun
ting. The framework which makes this relation possible is the theory of re
surgence\, where perturbative series lead to additional non-perturbative s
ectors\, and the integer invariants arise as Stokes constants. I will illu
strate these claims with explicit examples related to quantum invariants o
f hyperbolic knots. If time permits\, I will mention similar results in to
pological string theory.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/35/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cumrun Vafa (Harvard University)
DTSTART:20220623T010000Z
DTEND:20220623T020000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/36
DESCRIPTION:Title: Geometric Obstruction to Scale Separation\nby Cumr
un Vafa (Harvard University) as part of BIMSA Geometry and Physics Seminar
\n\n\nAbstract\nIn this talk I review the obstructions to scale separation
for quantum gravitational backgrounds involving AdS space. This basicall
y means that the overall aspects of the internal geometry are deeply linke
d with the curvature of the macroscopic AdS space it gives rise to. These
obstructions include evidence of a no-go conjecture in the context of Ein
stein manifolds which puts a lower bound on its diameter\, as well as expl
aining geometric issues arising in the KKLT scenario which prevents it fro
m giving rise to a counter-example.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/36/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nathan Seiberg (IAS)
DTSTART:20220728T020000Z
DTEND:20220728T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/37
DESCRIPTION:by Nathan Seiberg (IAS) as part of BIMSA Geometry and Physics
Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/37/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Iosif Bena (IPhT\, Saclay)
DTSTART:20220707T083000Z
DTEND:20220707T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/39
DESCRIPTION:Title: The Tadpole Problem\nby Iosif Bena (IPhT\, Saclay)
as part of BIMSA Geometry and Physics Seminar\n\n\nAbstract\nThe fluxes t
hat stabilize the complex-structure moduli of string compactifications giv
e rise to a nontrivial D3 charge\, which needs to be canceled by other obj
ects in the compactification. I will present arguments that this is imposs
ible when the number of complex-structure moduli is large. This indicates
that all String-Theory compactifications on manifolds with a large number
of complex-structure moduli have massless scalars and hence are not suited
for phenomenology.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/39/
END:VEVENT
BEGIN:VEVENT
SUMMARY:M. M. Sheikh-Jabbari (IPM)
DTSTART:20220630T083000Z
DTEND:20220630T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/40
DESCRIPTION:Title: Gravity $\\leftrightharpoons$ Thermodynamics\nby
M. M. Sheikh-Jabbari (IPM) as part of BIMSA Geometry and Physics Seminar\
n\n\nAbstract\nLast 50 years' developments have revealed deep relations be
tween thermodynamics and gravity as formulated in Einstein general relati
vity\, despite their apparent differences. These relations seem so fundame
ntal and deep that they have prompted the idea that they may be telling u
s about the very nature of gravity. In this talk I review these salient fe
atures and discuss recent developments in the connection between gravity a
nd thermodynamics. In particular\, I describe how general covariance ingra
vity theories leads to laws of thermodynamics when we consider gravity on
spacetimes with null boundaries.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/40/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thomas Hartman (Cornell University)
DTSTART:20220825T020000Z
DTEND:20220825T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/41
DESCRIPTION:Title: 3D gravity as an average large-c CFT\nby Thomas Ha
rtman (Cornell University) as part of BIMSA Geometry and Physics Seminar\n
\n\nAbstract\nEuclidean wormholes have played an important role in recent
progress on 2D gravity and on black hole information in higher dimensions.
However\, these spacetimes can also lead to puzzling results that seem to
disagree with quantum mechanics and the AdS/CFT correspondence\, which ha
s led to the suggestion that wormholes arise from coarse-graining over UV
degrees of freedom. I will explain the puzzle and show that Euclidean worm
holes and other higher topology spacetimes in 3D gravity can be interprete
d as averaged solutions of the 2D conformal bootstrap equations.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/41/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jan Manschot (Trinity College Dublin)
DTSTART:20221020T020000Z
DTEND:20221020T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/42
DESCRIPTION:Title: Topological correlators of 4d N=2* and 5d N=1 super Ya
ng-Mills\nby Jan Manschot (Trinity College Dublin) as part of BIMSA Ge
ometry and Physics Seminar\n\n\nAbstract\nI will discuss the evaluation of
correlation functions for topologically twisted gauge theory\, specifical
ly 1) the mass deformation of the 4d N=4 supersymmetric theory\, and 2) th
e 5d N=1 supersymmetric theory compactified on a four-manifold times S^1.
For gauge group SU(2)\, the correlation functions reduce in the low energy
effective field theory to an integral over a fundamental domain in the up
per-half plane. Correlation functions of the two theories give rise to top
ological invariants of the four-manifold\, including Donaldson invariants
and (holomorphic) Euler characteristics.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/42/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Clay Córdova (University of Chicago)
DTSTART:20221027T020000Z
DTEND:20221027T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/43
DESCRIPTION:Title: Non-Invertible Chiral Symmetry and Exponential Hierarc
hies\nby Clay Córdova (University of Chicago) as part of BIMSA Geomet
ry and Physics Seminar\n\n\nAbstract\nWe elucidate the fate of classical s
ymmetries which suffer from abelian Adler-Bell-Jackiw anomalies. Instead o
f being completely destroyed\, these symmetries survive as non-invertible
topological global symmetry defects with worldvolume anyon degrees of free
dom that couple to the bulk through a magnetic one-form global symmetry as
in the fractional hall effect. These non-invertible chiral symmetries imp
ly selection rules on correlation functions and arise in familiar models o
f massless quantum electrodynamics and models of axions (as well as their
non-abelian generalizations). When the associated bulk magnetic one-form s
ymmetry is broken by the propagation of dynamical magnetic monopoles\, the
selection rules of the non-invertible chiral symmetry defects are violate
d non-perturbatively. This leads to technically natural exponential hierar
chies in axion potentials and fermion masses.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/43/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Barak Gabai (Harvard University)
DTSTART:20221208T020000Z
DTEND:20221208T030000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/45
DESCRIPTION:Title: Line Operators in Chern-Simons-Matter Theories and Bos
onization in Three Dimensions\nby Barak Gabai (Harvard University) as
part of BIMSA Geometry and Physics Seminar\n\n\nAbstract\nI'll cover our r
ecent publications where we study Chern-Simons theories at large N with ei
ther bosonic or fermionic matter in the fundamental representation. The mo
st fundamental operators in these theories are mesonic line operators\, th
e simplest example being Wilson lines ending on fundamentals. We classify
the conformal line operators along an arbitrary smooth path as well as the
spectrum of conformal dimensions and transverse spins of their boundary o
perators at finite 't Hooft coupling. These line operators are shown to sa
tisfy first-order chiral evolution equations\, in which a smooth variation
of the path is given by a factorized product of two line operators. We ar
gue that this equation together with the spectrum of boundary operators ar
e sufficient to uniquely determine the expectation values of these operato
rs. We demonstrate this by bootstrapping the two-point function of the dis
placement operator on a straight line. We show that the line operators in
the theory of bosons and the theory of fermions satisfy the same evolution
equation and have the same spectrum of boundary operators.\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/45/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andres Collinucci (Brussels U.\, PTM)
DTSTART:20221215T083000Z
DTEND:20221215T093000Z
DTSTAMP:20260422T230721Z
UID:BIMSA_geometry_and_physics/46
DESCRIPTION:Title: Flops of any length\, Gopakumar-Vafa invariants and 5d
Higgs Branches\nby Andres Collinucci (Brussels U.\, PTM) as part of B
IMSA Geometry and Physics Seminar\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/BIMSA_geometry_and_physics/46/
END:VEVENT
END:VCALENDAR