BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Discussion on Langlands
DTSTART:20220630T180000Z
DTEND:20220630T190000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-264@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Alexander Braverman (PI & U of Toronto)\, David Ben-
Zvi (University of Texas\, Austin)\, Philsang Yoo (Seoul National Universi
ty)\, Davide Gaiotto (Perimeter Institute)\n\nhttps://events.perimeterinst
itute.ca/event/13/contributions/264/
URL:https://events.perimeterinstitute.ca/event/13/contributions/264/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d Theories and Twists I
DTSTART:20220620T130000Z
DTEND:20220620T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-233@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Kevin Costello (Perimeter Institute)\n\nhttps://even
ts.perimeterinstitute.ca/event/13/contributions/233/
URL:https://events.perimeterinstitute.ca/event/13/contributions/233/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d B Models and Knot Homology I
DTSTART:20220621T150000Z
DTEND:20220621T163000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-237@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Lev Rozansky (University of North Carolina\, Chapel
Hill)\n\nhttps://events.perimeterinstitute.ca/event/13/contributions/237/
URL:https://events.perimeterinstitute.ca/event/13/contributions/237/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Geometrical structures in 4d N=2 class S theories
DTSTART:20220623T150000Z
DTEND:20220623T163000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-243@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Fei Yan (Rutgers University)\n\nI will give an intro
duction to 4d N=2 class-S theories. I will describe the construction of su
ch theories\, the roles played by extended defects such as line defects an
d surface defects\, as well as connections to Hitchin systems.\n\nhttps://
events.perimeterinstitute.ca/event/13/contributions/243/
URL:https://events.perimeterinstitute.ca/event/13/contributions/243/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Classical BV Formalism and Topological Quantum Field Theory
DTSTART:20220620T193000Z
DTEND:20220620T210000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-235@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Philsang Yoo (Seoul National University)\n\nhttps://
events.perimeterinstitute.ca/event/13/contributions/235/
URL:https://events.perimeterinstitute.ca/event/13/contributions/235/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Field theory in the 1/2 Omega-background cont.
DTSTART:20220629T144500Z
DTEND:20220629T153000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-258@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Lotte Hollands (Heriot-Watt University)\n\nhttps://e
vents.perimeterinstitute.ca/event/13/contributions/258/
URL:https://events.perimeterinstitute.ca/event/13/contributions/258/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Generalised Langlands\, VOAs\, and (generalised) tau-functions con
t.
DTSTART:20220627T144500Z
DTEND:20220627T153000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-250@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Joerg Teschner (University of Hamburg & DESY)\n\nhtt
ps://events.perimeterinstitute.ca/event/13/contributions/250/
URL:https://events.perimeterinstitute.ca/event/13/contributions/250/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d Gauge Theory and Elliptic Stable Envelopes I
DTSTART:20220620T150000Z
DTEND:20220620T163000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-234@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Andrei Okounkov (Columbia University)\n\nhttps://eve
nts.perimeterinstitute.ca/event/13/contributions/234/
URL:https://events.perimeterinstitute.ca/event/13/contributions/234/
END:VEVENT
BEGIN:VEVENT
SUMMARY:On Boundary VOA's
DTSTART:20220621T193000Z
DTEND:20220621T210000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-238@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Davide Gaiotto (Perimeter Institute)\n\nhttps://even
ts.perimeterinstitute.ca/event/13/contributions/238/
URL:https://events.perimeterinstitute.ca/event/13/contributions/238/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d Gauge Theory and Elliptic Stable Envelopes IV
DTSTART:20220623T193000Z
DTEND:20220623T210000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-244@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Mykola Dedushenko (Stony Brook University)\n\nhttps:
//events.perimeterinstitute.ca/event/13/contributions/244/
URL:https://events.perimeterinstitute.ca/event/13/contributions/244/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The relative Langlands program via gauge theory
DTSTART:20220630T133000Z
DTEND:20220630T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-261@events.perimeterinstitute.ca
DESCRIPTION:Speakers: David Ben-Zvi (University of Texas\, Austin)\n\nI wi
ll discuss a close parallel between Gaiotto and Witten's S-duality for sup
ersymmetric boundary conditions in 4d N=4 SYM and the relative Langlands p
rogram\, an enhancement of the Langlands program that was developed to pro
vide a framework for the theory of integral representations of L-functions
. A special and conjecturally self-dual class of boundary conditions is pr
ovided by quantizations of "small" or "multiplicity-free" hamiltonian spac
es called hyperspherical varieties. I'll explain how a hyperspherical vari
ety produces objects of interest in all the different settings of the Lang
lands program (local / global\, geometric / arithmetic) and a collection o
f conjectures providing S-dual descriptions of these objects. The talk is
based on forthcoming joint work with Yiannis Sakellaridis and Akshay Venka
tesh.\n\nhttps://events.perimeterinstitute.ca/event/13/contributions/261/
URL:https://events.perimeterinstitute.ca/event/13/contributions/261/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Defects\, quantum trace map\, and exact WKB
DTSTART:20220627T160000Z
DTEND:20220627T170000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-251@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Fei Yan (Rutgers University)\n\nI will continue the
discussions on line defects and surface defects in class S theories\, maki
ng connections to the construction of the quantum trace map\, as well as t
o the exact WKB method for higher order ODEs.\n\nhttps://events.perimeteri
nstitute.ca/event/13/contributions/251/
URL:https://events.perimeterinstitute.ca/event/13/contributions/251/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fun with a holomorphic theory on twistor space
DTSTART:20220629T160000Z
DTEND:20220629T170000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-259@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Natalie Paquette (University of Washington)\n\nI wil
l summarize recent work with K. Costello\, in which a local holomorphic th
eory on twistor space furnishes an isomorphism between 1. correlators of
a 2d chiral algebra and 2. form factors (scattering amplitudes in the pres
ence of a local operator insertion) of a 4d non-unitary CFT\, with physics
applications.\n\nhttps://events.perimeterinstitute.ca/event/13/contributi
ons/259/
URL:https://events.perimeterinstitute.ca/event/13/contributions/259/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lie superalgebras and S-duality
DTSTART:20220630T160000Z
DTEND:20220630T170000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-263@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Alexander Braverman (PI & U of Toronto)\n\nWe presen
t a series of (partly proven) conjectures describing geometric realization
s of categories of (finite-dimensional) representations of quantum super-g
roups U_q(g) corresponding to Lie super-algebras g with reductive even par
t and a non-degenerate invariant form.\nWe shall also discuss the meaning
of these conjectures from the point of view of local geometric Langlands c
orrespondence as well as a connection to the work of Ben-Zvi\, Sakellaridi
s and Venkatesh.\nBased on joint works with M.Finkelberg\, V.Ginzburg and
R.Travkin as well as the work of R.Travkin and R.Yang.\n\nhttps://events.p
erimeterinstitute.ca/event/13/contributions/263/
URL:https://events.perimeterinstitute.ca/event/13/contributions/263/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion on 3d A-model
DTSTART:20220629T180000Z
DTEND:20220629T190000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-260@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Joerg Teschner (University of Hamburg & DESY)\, Lott
e Hollands (Heriot-Watt University)\, Fei Yan (Rutgers University)\, David
e Gaiotto (Perimeter Institute)\n\nhttps://events.perimeterinstitute.ca/ev
ent/13/contributions/260/
URL:https://events.perimeterinstitute.ca/event/13/contributions/260/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion on knot homology
DTSTART:20220627T180000Z
DTEND:20220627T190000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-252@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Lev Rozansky (University of North Carolina\, Chapel
Hill)\, Ben Webster (Perimeter Institute & University of Waterloo)\, Tudor
Dimofte (University of California\, Davis)\n\nhttps://events.perimeterins
titute.ca/event/13/contributions/252/
URL:https://events.perimeterinstitute.ca/event/13/contributions/252/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A and B models in 3d and 4d I
DTSTART:20220621T130000Z
DTEND:20220621T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-236@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Justin Hilburn (Perimeter Institute)\n\nhttps://even
ts.perimeterinstitute.ca/event/13/contributions/236/
URL:https://events.perimeterinstitute.ca/event/13/contributions/236/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d Gauge Theory and Elliptic Stable Envelopes II
DTSTART:20220622T130000Z
DTEND:20220622T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-239@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Mykola Dedushenko (Stony Brook University)\n\nhttps:
//events.perimeterinstitute.ca/event/13/contributions/239/
URL:https://events.perimeterinstitute.ca/event/13/contributions/239/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A and B Models in 3d and 4d II
DTSTART:20220624T150000Z
DTEND:20220624T163000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-246@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Justin Hilburn (Perimeter Institute)\n\nhttps://even
ts.perimeterinstitute.ca/event/13/contributions/246/
URL:https://events.perimeterinstitute.ca/event/13/contributions/246/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The relative Langlands program via gauge theory cont.
DTSTART:20220630T144500Z
DTEND:20220630T153000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-262@events.perimeterinstitute.ca
DESCRIPTION:Speakers: David Ben-Zvi (University of Texas\, Austin)\n\nhttp
s://events.perimeterinstitute.ca/event/13/contributions/262/
URL:https://events.perimeterinstitute.ca/event/13/contributions/262/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holomorphic BF theory\, 4d SYM and the analytic Geometric Langland
s program
DTSTART:20220628T133000Z
DTEND:20220628T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-253@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Davide Gaiotto (Perimeter Institute)\n\nI will revie
w the embedding of the analytic Geometric Langlands program in four-dimens
ional gauge theory.\n\nhttps://events.perimeterinstitute.ca/event/13/cont
ributions/253/
URL:https://events.perimeterinstitute.ca/event/13/contributions/253/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Open Discussion
DTSTART:20220624T193000Z
DTEND:20220624T210000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-247@events.perimeterinstitute.ca
DESCRIPTION:https://events.perimeterinstitute.ca/event/13/contributions/24
7/
URL:https://events.perimeterinstitute.ca/event/13/contributions/247/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holomorphic BF theory\, 4d SYM and the analytic Geometric Langland
s program cont.
DTSTART:20220628T144500Z
DTEND:20220628T153000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-254@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Davide Gaiotto (Perimeter Institute)\n\nhttps://even
ts.perimeterinstitute.ca/event/13/contributions/254/
URL:https://events.perimeterinstitute.ca/event/13/contributions/254/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Welcome and Opening Remarks
DTSTART:20220627T132500Z
DTEND:20220627T133000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-248@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Ben Webster (Perimeter Institute & University of Wat
erloo)\n\nhttps://events.perimeterinstitute.ca/event/13/contributions/248/
URL:https://events.perimeterinstitute.ca/event/13/contributions/248/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion on 4d N=2
DTSTART:20220628T180000Z
DTEND:20220628T190000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-256@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Ahsan Khan (Institute for Advanced Study)\, Benjamin
Gammage (Harvard University)\, Justin Hilburn (Perimeter Institute)\, Tud
or Dimofte (University of California\, Davis)\n\nhttps://events.perimeteri
nstitute.ca/event/13/contributions/256/
URL:https://events.perimeterinstitute.ca/event/13/contributions/256/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d Theories and Twists II
DTSTART:20220622T150000Z
DTEND:20220622T163000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-240@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Tudor Dimofte (University of Edinburgh)\n\nhttps://e
vents.perimeterinstitute.ca/event/13/contributions/240/
URL:https://events.perimeterinstitute.ca/event/13/contributions/240/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Open Discussion
DTSTART:20220622T193000Z
DTEND:20220622T210000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-241@events.perimeterinstitute.ca
DESCRIPTION:https://events.perimeterinstitute.ca/event/13/contributions/24
1/
URL:https://events.perimeterinstitute.ca/event/13/contributions/241/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Welcome and Opening Remarks
DTSTART:20220620T125000Z
DTEND:20220620T130000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-232@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Kevin Costello (Perimeter Institute)\n\nhttps://even
ts.perimeterinstitute.ca/event/13/contributions/232/
URL:https://events.perimeterinstitute.ca/event/13/contributions/232/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d Gauge Theory and Elliptic Stable Envelopes III
DTSTART:20220623T130000Z
DTEND:20220623T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-242@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Andrei Okounkov (Columbia University)\n\nhttps://eve
nts.perimeterinstitute.ca/event/13/contributions/242/
URL:https://events.perimeterinstitute.ca/event/13/contributions/242/
END:VEVENT
BEGIN:VEVENT
SUMMARY:3d B Models and Knot Homology II
DTSTART:20220624T130000Z
DTEND:20220624T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-245@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Lev Rozansky (University of North Carolina\, Chapel
Hill)\n\nhttps://events.perimeterinstitute.ca/event/13/contributions/245/
URL:https://events.perimeterinstitute.ca/event/13/contributions/245/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Abelian 3d mirror symmetry and boundary conditions
DTSTART:20220628T160000Z
DTEND:20220628T170000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-255@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Benjamin Gammage (Harvard University)\n\n3d mirror s
ymmetry predicts an equivalence between A- and B-twists of a pair of dual
3d N=4 theories. Essentially the strongest invariants one can produce of t
he resulting 3-dimensional topological field theories are their 2-categori
es of boundary conditions. The B-side 2-category was first described by Ka
pustin-Rozansky-Saulinas\, but the 2-categorical structure on A-side bound
ary conditions has not previously been understood. For abelian gauge theor
ies with matter\, we propose a model for the 2-category of A-type boundary
conditions using Kapranov-Schechtman's "perverse schobers\," and we prove
a 3d mirror equivalence between dual 2-categories. By reducing to lower-d
imensions\, we can recover both the BFN construction and the BLPW Koszul d
uality for hypertoric categories O. This is joint work with Justin Hilburn
and Aaron Mazel-Gee.\n\nhttps://events.perimeterinstitute.ca/event/13/con
tributions/255/
URL:https://events.perimeterinstitute.ca/event/13/contributions/255/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Field theory in the 1/2 Omega-background
DTSTART:20220629T133000Z
DTEND:20220629T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-257@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Lotte Hollands (Heriot-Watt University)\n\nIn this l
ecture I'll discuss various aspects of 4d N=2 and 5d N=1 supersymmetric QF
T's in the 1/2 Omega-background (and along the way try to emphasize some r
elations to the 3d N=2 theories discussed in this workshop). Central to th
is story is the Nekrasov instanton partition function (or topological stri
ng partition function) in this background\, which we will obtain through a
belianization as an integral of a ratio of Wronskians of certain special s
olutions to the relevant Schrodinger equation. We will argue that a slight
generalization of the above partition function solves an associated Riema
nn-Hilbert problem and defines a section of a distinguished line bundle ov
er the moduli space of flat connections.\n\nhttps://events.perimeterinstit
ute.ca/event/13/contributions/257/
URL:https://events.perimeterinstitute.ca/event/13/contributions/257/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Generalised Langlands\, VOAs\, and (generalised) tau-functions
DTSTART:20220627T133000Z
DTEND:20220627T143000Z
DTSTAMP:20231128T132200Z
UID:indico-contribution-249@events.perimeterinstitute.ca
DESCRIPTION:Speakers: Joerg Teschner (University of Hamburg & DESY)\n\nIn
the first part of my talk I'll briefly review some aspects of the relation
s between N=4\, d=4 SYM and vertex operator algebras (VOAs) discussed in r
ecent work of Gaiotto and collaborators. The resulting picture predicts co
njectural generalisations of the geometric Langlands correspondence. We wi
ll focus on a class of examples figuring prominently in recent work of Cre
utzig-Dimofte-Garner-Geer\, labelled by parameters n (rank) and k. For the
case k=1\,n=2 we will point out that the conformal blocks of the relevant
VOA\, twisted by local systems\, represent sections of natural holomorphi
c line bundles over the moduli spaces of local systems closely related to
the isomonodromic tau functions. Observing the crucial role of (quantised
) cluster algebras in the definition of the holomorphic line bundles sugg
ests natural generalisations of this story to higher values of the paramet
ers k and n.\n\nhttps://events.perimeterinstitute.ca/event/13/contribution
s/249/
URL:https://events.perimeterinstitute.ca/event/13/contributions/249/
END:VEVENT
END:VCALENDAR