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BEGIN:VEVENT
SUMMARY:Cumrun Vafa (Harvard)
DTSTART;VALUE=DATE-TIME:20200514T160000Z
DTEND;VALUE=DATE-TIME:20200514T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/1
DESCRIPTION:Title: Cobordism classes\, baby universes and the swampland\nby Cumrun Vafa
(Harvard) as part of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Clay Cordova (Chicago)
DTSTART;VALUE=DATE-TIME:20200528T160000Z
DTEND;VALUE=DATE-TIME:20200528T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/2
DESCRIPTION:Title: Line Defect Quantum Numbers and Anomalies\nby Clay Cordova (Chicago)
as part of QFT and Geometry\n\n\nAbstract\nI will describe a class of dis
crete anomalies of quantum field theories and explain how they are closely
related to the statistics of line defects. Based on work in progress with
Brennan and Dumitrescu.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nathan Seiberg (IAS)
DTSTART;VALUE=DATE-TIME:20200611T160000Z
DTEND;VALUE=DATE-TIME:20200611T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/3
DESCRIPTION:Title: TBA\nby Nathan Seiberg (IAS) as part of QFT and Geometry\n\nAbstract
: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Atish Dabholkar (ICTP)
DTSTART;VALUE=DATE-TIME:20200625T160000Z
DTEND;VALUE=DATE-TIME:20200625T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/4
DESCRIPTION:Title: TBA\nby Atish Dabholkar (ICTP) as part of QFT and Geometry\n\nAbstra
ct: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Irene Valenzuela (Harvard)
DTSTART;VALUE=DATE-TIME:20200709T160000Z
DTEND;VALUE=DATE-TIME:20200709T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/5
DESCRIPTION:Title: Nothing is certain in string compactifications\nby Irene Valenzuela
(Harvard) as part of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Abhijit Gadde (TIFR)
DTSTART;VALUE=DATE-TIME:20200723T160000Z
DTEND;VALUE=DATE-TIME:20200723T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/6
DESCRIPTION:Title: Modularity of supersymmetric partition functions\nby Abhijit Gadde (
TIFR) as part of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tudor Dimofte (UCDavis)
DTSTART;VALUE=DATE-TIME:20200806T160000Z
DTEND;VALUE=DATE-TIME:20200806T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/7
DESCRIPTION:Title: Holomorphic twists and boundary vertex algebras\nby Tudor Dimofte (U
CDavis) as part of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Natalie Paquette (Caltech)
DTSTART;VALUE=DATE-TIME:20200716T160000Z
DTEND;VALUE=DATE-TIME:20200716T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/8
DESCRIPTION:Title: Koszul duality in field theory & holography\nby Natalie Paquette (Ca
ltech) as part of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:QFT and Geometry Summer School
DTSTART;VALUE=DATE-TIME:20200713T160000Z
DTEND;VALUE=DATE-TIME:20200713T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/9
DESCRIPTION:by QFT and Geometry Summer School as part of QFT and Geometry\
n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nikolay Bobev (Leuven)
DTSTART;VALUE=DATE-TIME:20200820T160000Z
DTEND;VALUE=DATE-TIME:20200820T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/10
DESCRIPTION:Title: The Unreasonable Effectiveness of Higher-Derivative Supergravity in AdS
_4 Holography\nby Nikolay Bobev (Leuven) as part of QFT and Geometry\n
\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alba Grassi (SCGP/ETH)
DTSTART;VALUE=DATE-TIME:20200903T160000Z
DTEND;VALUE=DATE-TIME:20200903T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/11
DESCRIPTION:by Alba Grassi (SCGP/ETH) as part of QFT and Geometry\n\nAbstr
act: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gabi Zafrir (Milano)
DTSTART;VALUE=DATE-TIME:20200917T160000Z
DTEND;VALUE=DATE-TIME:20200917T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/12
DESCRIPTION:Title: An N=1 Lagrangian for an N=3 SCFT\nby Gabi Zafrir (Milano) as part
of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Greg Moore (Rutgers)
DTSTART;VALUE=DATE-TIME:20201001T160000Z
DTEND;VALUE=DATE-TIME:20201001T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/13
DESCRIPTION:Title: Cecotti-Vafa Flavored Cones\nby Greg Moore (Rutgers) as part of QFT
and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hee-Cheol Kim (POSTECH)
DTSTART;VALUE=DATE-TIME:20201015T130000Z
DTEND;VALUE=DATE-TIME:20201015T140000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/14
DESCRIPTION:Title: 3d Topological Phases from M-theory (note unusual time!)\nby Hee-Ch
eol Kim (POSTECH) as part of QFT and Geometry\n\n\nAbstract\nI will presen
t a novel M-theoretic approach of constructing 3d topological phases by es
tablishing a correspondence between 3d topological field theories and non-
hyperbolic 3-manifolds. In this construction\, the topological phases emer
ge as macroscopic world-volume theories of M5-branes wrapped around certai
n types of non-hyperbolic 3-manifolds. I will introduce a systematic algor
ithm for identifying the emergent topological phases from topological data
of the non-hyperbolic 3-manifolds\, and show that using this construction
all the known unitary bosonic TQFTs up to rank 4 can be geometrically rea
lized.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Emily Nardoni (UCLA)
DTSTART;VALUE=DATE-TIME:20201112T160000Z
DTEND;VALUE=DATE-TIME:20201112T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/15
DESCRIPTION:Title: From SU(N) Seiberg-Witten Theory to Adjoint QCD\nby Emily Nardoni (
UCLA) as part of QFT and Geometry\n\n\nAbstract\nStandard lore suggests th
at four-dimensional SU(N) gauge theory with 2 massless adjoint Weyl fermio
ns ("adjoint QCD") flows to a phase with confinement and chiral symmetry b
reaking. In this talk\, I will describe how to obtain adjoint QCD from SU(
N) Seiberg-Witten theory by deforming the latter with a soft supersymmetry
-breaking mass for the adjoint scalars. I will show how qualitative featur
es of the expected adjoint QCD phase are captured semi-classically using a
Lagrangian that originates from the multi-monopole points of Seiberg-Witt
en theory upon soft SUSY-breaking. This Lagrangian also suggests the exist
ence of intermediate phases\, separated by first order phase transitions\,
that interpolate between the Coulomb phase of Seiberg-Witten theory and t
he confining\, chiral symmetry breaking phase expected for adjoint QCD.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fei Yan (Rutgers)
DTSTART;VALUE=DATE-TIME:20201029T160000Z
DTEND;VALUE=DATE-TIME:20201029T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/16
DESCRIPTION:Title: Protected spin characters\, link invariants and exact WKB\nby Fei Y
an (Rutgers) as part of QFT and Geometry\n\n\nAbstract\nIn this talk I wil
l describe the construction of a new link "invariant" (with possible wall-
crossing behaviors) for links L in a 3-manifold M\, where M is a surface t
imes the real line. This construction computes familiar link invariants in
a new way\, furthermore it unifies that computation with the computation
of (framed) protected spin characters counting ground states with spin for
supersymmetric line defects in 4d N=2 theories of class-S. I will also me
ntion possible extensions to general 3-manifolds M that admit a triangulat
ion with tetrahedrons. Finally I will describe some applications of this c
onstruction\, in particular to a possible extension of the exact WKB metho
d in 4d N=2 theories. This talk is based on past and ongoing work with And
rew Neitzke\, as well as ongoing work with Gregory Moore and Andrew Neitzk
e.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mini-Workshop QFT and Geometry
DTSTART;VALUE=DATE-TIME:20201203T160000Z
DTEND;VALUE=DATE-TIME:20201203T193000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/17
DESCRIPTION:Title: Mini-Workshop QFT and Geometry\nby Mini-Workshop QFT and Geometry
as part of QFT and Geometry\n\n\nAbstract\nhttps://sites.google.com/view/
qftandgeometryseminars/mini-workshop\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Craig Lawrie (University of Pennsylvania)
DTSTART;VALUE=DATE-TIME:20201210T170000Z
DTEND;VALUE=DATE-TIME:20201210T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/18
DESCRIPTION:Title: 4d N=2 SCFTs from 6d (1\,0) on T^2 and Class S\nby Craig Lawrie (Un
iversity of Pennsylvania) as part of QFT and Geometry\n\n\nAbstract\nI wil
l compare two constructions of 4d N=2 SCFTs from 6d: compactifying (2\,0)
SCFTs on a punctured Riemann surface\, and compactifying (1\,0) SCFTs on a
torus. We find that every theory obtained from compactifying the (2\,0) t
heories on a three punctured sphere\, with one simple puncture\, can be al
ternatively realized by a torus compactification of a (1\,0) SCFT. The 6d
(1\,0) SCFTs of relevance are all Higgs branch RG-flows/complex structure
deformations of conformal matter and this structure is replicated via Coul
omb branch flows amongst the resulting 4d theories. I will discuss the geo
metric construction of 6d (1\,0) SCFTs and how to determine the central ch
arges and global symmetries of the torus compactification\; the necessary
data to match to the class S formulation. Finally\, I will explicitly desc
ribe the overlap between the two constructions.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mini-Workshop QFT and Geometry
DTSTART;VALUE=DATE-TIME:20201204T160000Z
DTEND;VALUE=DATE-TIME:20201204T193000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/19
DESCRIPTION:Title: Mini-Workshop QFT and Geometry\nby Mini-Workshop QFT and Geometry
as part of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Elli Pomoni (DESY)
DTSTART;VALUE=DATE-TIME:20210114T170000Z
DTEND;VALUE=DATE-TIME:20210114T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/20
DESCRIPTION:Title: Type-B Anomalies on the Higgs Branch\nby Elli Pomoni (DESY) as part
of QFT and Geometry\n\n\nAbstract\nIn this talk we will study type-B conf
ormal anomalies associated with 1/2-BPS Coulomb-branch operators in 4D N=2
SCFTs. We will derive the\nconditions under which these anomalies can mat
ch across the conformal phase and the Higgs phase\, and explicitly see the
m at work in concrete\nexamples of both matching and non-matching. On the
one hand matching leads to a new class of data on the Higgs branch of 4D N
=2 SCFTs that are exactly computable. On the other\, non-matching imposes
novel restrictions on the holonomy of the conformal manifold.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/20/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Davide Gaiotto (Perimeter)
DTSTART;VALUE=DATE-TIME:20210128T170000Z
DTEND;VALUE=DATE-TIME:20210128T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/21
DESCRIPTION:Title: Vertex operators and screening charges as gauge-invariant brane interse
ctions in twisted M-theory.\nby Davide Gaiotto (Perimeter) as part of
QFT and Geometry\n\n\nAbstract\nI will discuss my work on the \\Omega-defo
rmation of brane\nintersections in M-theory and its relation to vertex alg
ebras.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kazuya Yonekura (Tohoku)
DTSTART;VALUE=DATE-TIME:20210211T150000Z
DTEND;VALUE=DATE-TIME:20210211T160000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/22
DESCRIPTION:Title: Topological violation of global symmetries in quantum gravity\nby K
azuya Yonekura (Tohoku) as part of QFT and Geometry\n\n\nAbstract\nWe disc
uss a topological reason why global symmetries are not conserved in quantu
m gravity\, at least when the symmetry comes from compactification of a hi
gher form symmetry. The mechanism is purely topological and does not requi
re any explicit breaking term in the UV Lagrangian. Local current conserva
tion does not imply global charge conservation in a sum over geometries in
the path integral. We explicitly consider the shift symmetry of an axion-
like field which originates from the compactification of a p-form gauge fi
eld. Our topological construction is motivated by the brane/black-brane co
rrespondence\, brane instantons\, and an idea that virtual black branes of
a simple kind may be realized by surgery on spacetime manifolds.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/22/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Du Pei (Harvard)
DTSTART;VALUE=DATE-TIME:20210225T170000Z
DTEND;VALUE=DATE-TIME:20210225T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/23
DESCRIPTION:Title: On the compactification of 6d theories\nby Du Pei (Harvard) as part
of QFT and Geometry\n\n\nAbstract\nThe existence of quantum field theorie
s in higher dimensions leads to many interesting predictions in physics an
d mathematics. In this talk\, I will discuss some general features that ar
ise when a 6d theory is compactified on a d-dimensional manifold\, focusin
g on the interplay between symmetries\, anomalies\, and dynamics of the re
sulting (6-d)-dimensional theory.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mario Martone (SCGP)
DTSTART;VALUE=DATE-TIME:20210311T170000Z
DTEND;VALUE=DATE-TIME:20210311T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/24
DESCRIPTION:Title: Geometric constraints on the space of 4d theories\nby Mario Martone
(SCGP) as part of QFT and Geometry\n\n\nAbstract\nThe geometry of the mod
uli space of four dimensional superconformal theories is uniquely constrai
ned by complex \ngeometry and it thus represents an ideal set up for a bot
tom up classification program. Recently\, great progress has been made\nin
relating the geometric data to the field theoretic one. I will provide an
update on the program\, explain these new results and \noutline a variety
of open questions.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/24/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dalimil Mazac (IAS)
DTSTART;VALUE=DATE-TIME:20210325T160000Z
DTEND;VALUE=DATE-TIME:20210325T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/25
DESCRIPTION:Title: Sharp Boundaries for the Swampland\nby Dalimil Mazac (IAS) as part
of QFT and Geometry\n\n\nAbstract\nI will discuss the problem of bounding
higher derivative couplings in consistent weakly coupled gravitational the
ories. The starting point will be general assumptions about analyticity an
d Regge growth of the S-matrix. Higher derivative couplings are expected t
o be of order one in the units of the UV cutoff. Our approach justifies th
is expectation and allows us to prove precise bounds on the order one coef
ficients. I will explain that the notorious difficulties presented by the
graviton pole can be overcome by measuring couplings at small impact param
eter\, rather than in the forward limit. I will illustrate the method in t
heories containing a massless scalar coupled to gravity\, and in theories
with maximal supersymmetry. My talk will be based on https://arxiv.org/pdf
/2102.08951.pdf\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/25/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Saebyeok Jeong (Rutgers)
DTSTART;VALUE=DATE-TIME:20210422T160000Z
DTEND;VALUE=DATE-TIME:20210422T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/26
DESCRIPTION:Title: Intersecting defects in gauge theory\nby Saebyeok Jeong (Rutgers) a
s part of QFT and Geometry\n\n\nAbstract\nI will talk about intersecting h
alf-BPS surface defects in four-dimensional N=2 supersymmetric gauge theor
ies. First\, I will introduce transversally intersecting surface defects f
rom D3-branes on an orbifold. Then\, I will explain their correlation func
tion satisfies a difference equation\, called fractional quantum T-Q equat
ion. I will discuss its implications on the correspondences with two-dimen
sional conformal field theory and XXX spin chain system.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/26/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marcos Marino (Geneva)
DTSTART;VALUE=DATE-TIME:20210506T160000Z
DTEND;VALUE=DATE-TIME:20210506T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/27
DESCRIPTION:Title: Peacock patterns\, or how to get integer invariants from perturbative s
eries\nby Marcos Marino (Geneva) as part of QFT and Geometry\n\n\nAbst
ract\nQuantum field and string theories often lead to perturbative series
\nwhich encode geometric information. In this talk I will argue that\, in
the case of complex \nChern-Simons theory and topological string theory\,
these perturbative series \nsecretly encode integer invariants\, related i
n some cases to BPS counting. \nThe framework which makes this relation po
ssible is the theory of resurgence\, where \nperturbative series lead to a
dditional non-perturbative sectors. I’ll show that \nthe integer invaria
nts arise as Stokes constants of the resulting resurgent structure\, \nin
what we call a ``peacock pattern”. I will illustrate these claims with e
xplicit examples \nrelated to hyperbolic knots and toric Calabi-Yau threef
olds. \nFactorization in (anti)holomorphic blocks and the correspondence b
etween topological strings and \nspectral theory turn out to play an impor
tant role in the story.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/27/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shamit Kachru (Stanford)
DTSTART;VALUE=DATE-TIME:20210408T160000Z
DTEND;VALUE=DATE-TIME:20210408T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/28
DESCRIPTION:Title: K3 metrics from string theory\nby Shamit Kachru (Stanford) as part
of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/28/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Miguel Montero (Harvard)
DTSTART;VALUE=DATE-TIME:20210520T160000Z
DTEND;VALUE=DATE-TIME:20210520T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/29
DESCRIPTION:Title: Non-invertible global symmetries and completeness of the spectrum\n
by Miguel Montero (Harvard) as part of QFT and Geometry\n\n\nAbstract\nIt
is commonly believed that there are no global symmetries in quantum gravit
y\, and also that the spectrum of charged states is complete. It is also c
ommon lore that these two properties are related or equivalent. I will exp
lore this question in the context of quantum field theory\, explicitly sho
wing examples which have an incomplete spectrum\, but no ordinary global
symmetries. However\, these examples have non-invertible topological opera
tors\; demanding their absence restores completeness of the spectrum. I wi
ll discuss how this equivalence between completeness of the spectrum and a
bsence of non-invertible symmetries can be established rigorously for elec
tric states in gauge theory\, for any compact (even disconnected) gauge gr
oup\, and for twist vortices (codimension-2 objects related to Gukov-Witte
n operators). I will also briefly comment on the situation for non-compact
gauge groups\, theories with Chern-Simons terms\, and the motivation for
the absence of non-invertible topological operators in gravity.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/29/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michele del Zotto (Uppsala)
DTSTART;VALUE=DATE-TIME:20210603T160000Z
DTEND;VALUE=DATE-TIME:20210603T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/30
DESCRIPTION:Title: Geometric Engineering and Correspondences\nby Michele del Zotto (Up
psala) as part of QFT and Geometry\n\n\nAbstract\nThe prediction of the ex
istence of correspondences among QFTs is one the many interesting applicat
ions of higher dimensional SCFTs. In this talk\, I will discuss a strategy
to predict further correspondences which is rooted in geometric engineeri
ng. Several examples and applications will be presented. In particular\, I
will discuss some aspects of a recently found 5d/7d correspondence that l
inks higher Donaldson-Thomas theory to 5d SCFT partition functions on mult
icentered Taub-NUT spaces.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/30/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Edward Witten (IAS)
DTSTART;VALUE=DATE-TIME:20210610T160000Z
DTEND;VALUE=DATE-TIME:20210610T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/31
DESCRIPTION:Title: Black Hole Thermodynamics\, Then and Now\nby Edward Witten (IAS) as
part of QFT and Geometry\n\n\nAbstract\nI will review some the high point
s of black hole thermodynamics as it developed in the 1970's\, and then tr
y to give at least a hint of modern developments that involve a microscopi
c definition of entropy.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/31/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Justin Kaidi (SCGP)
DTSTART;VALUE=DATE-TIME:20210708T160000Z
DTEND;VALUE=DATE-TIME:20210708T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/32
DESCRIPTION:Title: Obstructions to Gapped Boundaries in (2+1)d TQFT\nby Justin Kaidi (
SCGP) as part of QFT and Geometry\n\n\nAbstract\nNot all 2+1-dimensional T
QFTs admit topological boundary conditions. A familiar necessary\, but not
sufficient\, condition for the existence of a topological boundary is the
vanishing of the chiral central charge (mod 8). In this talk I will discu
ss generalizations of the chiral central charge known as ``higher” centr
al charges. These quantities can be used to give necessary and sufficient
conditions for the existence of topological boundary conditions for Abelia
n TQFTs\, providing a highly-computable alternative to conditions known pr
eviously in the literature.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/32/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mina Aganagic (Berkeley)
DTSTART;VALUE=DATE-TIME:20210805T160000Z
DTEND;VALUE=DATE-TIME:20210805T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/33
DESCRIPTION:Title: Knot Homology from Mirror Symmetry\nby Mina Aganagic (Berkeley) as
part of QFT and Geometry\n\n\nAbstract\nKhovanov showed\, more than 20 yea
rs ago\, that there is a deeper theory underlying the Jones polynomial. Th
e``knot categorification problem” is to find a uniform description of th
is theory\, for all gauge groups\, which originates from physics. I found
two solutions to this problem\, related by a version of two dimensional (h
omological) mirror symmetry. They are based on two descriptions of the the
ory that lives on defects of the six dimensional (0\,2) CFT\, which are su
pported on a link times ``time”. \n\nIn this talk\, I will focus on the
description in terms of A-branes\, which is new and surprising. (While the
B-brane description is new as well\, it shares flavors of theories mathem
aticians discovered earlier.) The theory turns out to be solvable explicit
ly\, in terms of a simpler cousin of a KRLW algebra.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/33/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Constantin Teleman (Berkeley)
DTSTART;VALUE=DATE-TIME:20210902T160000Z
DTEND;VALUE=DATE-TIME:20210902T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/34
DESCRIPTION:Title: Topological gauge theory in 2 and 3 dimension\nby Constantin Telema
n (Berkeley) as part of QFT and Geometry\n\n\nAbstract\nIn this survey\, I
will review two approaches to the subject\, via the curved Cartan complex
and the Toda integrable system\, with examples.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/34/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lakshya Bhardwaj (Oxford)
DTSTART;VALUE=DATE-TIME:20210916T160000Z
DTEND;VALUE=DATE-TIME:20210916T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/35
DESCRIPTION:Title: An Overview of the Recent Developments in 5d SCFTs Using Surface Geomet
ries\nby Lakshya Bhardwaj (Oxford) as part of QFT and Geometry\n\n\nAb
stract\nI will provide an overview (geared towards non-experts) of the rec
ent developments in understanding the classification and (generalized) glo
bal symmetries of 5d superconformal field theories (SCFTs). I will be focu
sing mainly on the developments made possible by studying surface geometri
es associated to these 5d SCFTs\, which encode the rich physics associated
to the Coulomb branch of vacua of 5d SCFTs.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/35/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jerome Gauntlett (Imperial College)
DTSTART;VALUE=DATE-TIME:20210930T160000Z
DTEND;VALUE=DATE-TIME:20210930T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/36
DESCRIPTION:Title: Branes Wrapped on Spindles\nby Jerome Gauntlett (Imperial College)
as part of QFT and Geometry\n\n\nAbstract\nWe discuss a new landscape of h
olographic SCFTs associated with branes wrapped on a spindle. A spindle is
a specific two dimensional orbifold: a two sphere with quantised conical
deficits at each of the poles. We construct solutions describing the wrapp
ed branes in gauged supergravity and then uplift them to D=10 and D=11 sup
ergravity. Remarkably\, supersymmetry is not realised by the standard topo
logical twist and\, furthermore\, in some case the higher dimensional solu
tions are free from all orbifold singularities. For the case of D3 and M5
branes wrapping spindles we calculate the central charge of the CFT that a
rises both from the gravity solution and from a field theory computation a
nd find exact agreement. For the case of M2 branes there is an interesting
connection with D=4 accelerating black holes.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/36/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Daniel Robbins (Albany)
DTSTART;VALUE=DATE-TIME:20211014T160000Z
DTEND;VALUE=DATE-TIME:20211014T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/37
DESCRIPTION:Title: Decomposition in orbifolds\, quantum symmetries\, and anomalies\nby
Daniel Robbins (Albany) as part of QFT and Geometry\n\n\nAbstract\nIn the
context of 2D CFT\, decomposition occurs when we construct an orbifold of
a theory by gauging a group G that has a trivially-acting subgroup K. Th
e resulting theory is a disjoint union of orbifolds by subgroups of the ef
fective G/K symmetry. We'll generalize this old story by first turning on
discrete torsion\, and then observing that there are even more phases tha
t can be introduced by exploiting the fact that K acts trivially. These p
hases sometimes let us gauge G even when it has an anomaly\, or let us ext
end an anomalous group to something we can gauge.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/37/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Noppadol Mekareeya (Milano)
DTSTART;VALUE=DATE-TIME:20211028T160000Z
DTEND;VALUE=DATE-TIME:20211028T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/38
DESCRIPTION:Title: Argyres-Douglas theories: Conformal manifolds and 3d mirror theories\nby Noppadol Mekareeya (Milano) as part of QFT and Geometry\n\n\nAbstrac
t\nArgyres-Douglas (AD) theories constitute an infinite class of 4d N=2 su
perconformal field theories with a number of interesting properties. A dis
tinctive feature of these theories is the presence of Coulomb branch opera
tors of fractional dimension. In this talk\, we discuss several new aspect
s of such theories\, including their conformal manifolds\, structures of t
he Higgs branch\, as well as the 3d gauge theories that arise from dimensi
onal reduction on a circle. As a by-product of the latter\, we present a
number of dualities between 3d N=4 gauge theories coming from the reductio
n of AD theories that belong to different classes but are equivalent to ea
ch other.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/38/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alberto Zaffaroni (Milano)
DTSTART;VALUE=DATE-TIME:20211209T170000Z
DTEND;VALUE=DATE-TIME:20211209T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/40
DESCRIPTION:Title: Large N factorization and holography\nby Alberto Zaffaroni (Milano)
as part of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/40/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tom Rudelius (Berkeley)
DTSTART;VALUE=DATE-TIME:20211111T170000Z
DTEND;VALUE=DATE-TIME:20211111T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/41
DESCRIPTION:Title: Geometric Implications of the Weak Gravity Conjecture\nby Tom Rudel
ius (Berkeley) as part of QFT and Geometry\n\n\nAbstract\nThe Weak Gravity
Conjecture holds that in any consistent theory of quantum gravity\, gravi
ty must be the weakest force. This simple proposition has surprisingly non
trivial physical consequences\, which in the case of supersymmetric string
/M-theory compactifications lead to nontrivial geometric consequences for
Calabi-Yau manifolds. In this talk we will describe these conjectured geom
etric consequences in detail and show how they are realized in concrete ex
amples\, deriving new results about 5d supersymmetric black holes in the p
rocess.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/41/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mariana Grana (Saclay)
DTSTART;VALUE=DATE-TIME:20220224T170000Z
DTEND;VALUE=DATE-TIME:20220224T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/42
DESCRIPTION:Title: The tadpole problem\nby Mariana Grana (Saclay) as part of QFT and G
eometry\n\n\nAbstract\nOne of the biggest problems in string compactificat
ions is the large number of massless fields associated to deformations of
the internal geometry. These “moduli” get masses from fluxes wrapping
non-trivial cycles on the manifold. Fluxes have an associated charge\, wh
ich on a compact manifold has to satisfy tadpole cancelation conditions.
The tadpole conjecture proposes that the charge induced by the fluxes need
ed to stabilise a large number of moduli grows linearly with the number of
moduli. In this talk I will explain the conjecture\, present its motivati
on\, supporting evidence and consequences.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/42/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Miranda Cheng (Amsterdam)
DTSTART;VALUE=DATE-TIME:20220120T160000Z
DTEND;VALUE=DATE-TIME:20220120T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/43
DESCRIPTION:Title: 3d Manifolds\, Log VOAs and Quantum Modular Forms\nby Miranda Cheng
(Amsterdam) as part of QFT and Geometry\n\n\nAbstract\nThe q-series 3-man
ifold invariants provide new insights and computational tools in 3-manifol
d topology\, 3d SQFT\, and M-theory compactifications. In this talk I will
survey the relation between these q-series 3-manifold invariants\, (logar
ithmic) VOAs\, and quantum modular forms.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/43/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eric Perlmutter (Saclay)
DTSTART;VALUE=DATE-TIME:20220310T170000Z
DTEND;VALUE=DATE-TIME:20220310T180000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/44
DESCRIPTION:Title: Harnessing S-Duality in N=4 SYM & Supergravity as SL(2\,Z)-Averaged Str
ings\nby Eric Perlmutter (Saclay) as part of QFT and Geometry\n\n\nAbs
tract\nI will talk about this paper\, written with Scott Collier: https://
arxiv.org/abs/2201.05093\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/44/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Simeon Hellerman (Kavli IPMU)
DTSTART;VALUE=DATE-TIME:20220331T160000Z
DTEND;VALUE=DATE-TIME:20220331T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/46
DESCRIPTION:Title: Precision Correlators at Large R-Charge\nby Simeon Hellerman (Kavli
IPMU) as part of QFT and Geometry\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/46/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thomas Grimm (Utrecht)
DTSTART;VALUE=DATE-TIME:20220421T160000Z
DTEND;VALUE=DATE-TIME:20220421T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/47
DESCRIPTION:Title: Tame geometry in QFTs and String Theory\nby Thomas Grimm (Utrecht)
as part of QFT and Geometry\n\n\nAbstract\nIn this talk I will introduce a
generalized notion of finiteness and argue that it appears in many well-u
nderstood string theory effective theories and in perturbative QFTs. The u
nderlying mathematical foundation is described by the tame geometry that i
s built from o-minimal structures. I will briefly introduce this fascinati
ng field of mathematics which is linking geometry and logic. I will then u
se some of the remarkable recent results from this field to discuss the ta
meness of (1) supergravity theories with N>=4\, (2) flux compactifications
of string theory\, and (3) general n-loop QFT amplitudes. To frame these
observations\, I will propose a Tameness Conjecture that claims that consi
stent effective theories that can be coupled to gravity have to be tame.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/47/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michela Petrini (Paris)
DTSTART;VALUE=DATE-TIME:20220616T160000Z
DTEND;VALUE=DATE-TIME:20220616T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/48
DESCRIPTION:Title: The supergravity duals of deformed N=1 SCFT’s\nby Michela Petrini
(Paris) as part of QFT and Geometry\n\n\nAbstract\nWe address the long-st
anding problem of determining the gravity dual of generic deformations of
4d N=1 super-conformal field theories. Using the language of generalised g
eometry we show how the geometry of the supergravity backgrounds can be de
scribed in terms of generalised structures that encodes the holomorphic st
ructure of the dual field theories. Even if we are not able to give the su
pergravity solutions in an explicit form\, we give a proof-of-existence o
f such backgrounds and we show how to compute chiral rings\, moduli and Hi
lbert series for the deformed field theories.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/48/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shu-Heng Shao (Stony Brook)
DTSTART;VALUE=DATE-TIME:20220602T160000Z
DTEND;VALUE=DATE-TIME:20220602T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/49
DESCRIPTION:Title: Non-invertible Global Symmetries in the Standard Model\nby Shu-Heng
Shao (Stony Brook) as part of QFT and Geometry\n\n\nAbstract\nWe identify
infinitely many non-invertible generalized global symmetries in QED and Q
CD for the real world in the massless limit. In QED\, while there is no
conserved Noether current for the axial symmetry because of the ABJ anoma
ly\, for every rational angle\, we construct a conserved and gauge-invaria
nt topological symmetry operator. Intuitively\, it is a composition of th
e axial rotation and a fractional quantum Hall state coupled to the electr
omagnetic U(1) gauge field. These conserved symmetry operators do not obe
y a group multiplication law\, but a non-invertible fusion algebra over T
QFT coefficients. These non-invertible symmetries lead to selection rules\
, which are consistent with the scattering amplitudes in QED. We further g
eneralize our construction to QCD\, and show that the neutral pion decay
can be understood from a matching condition of the non-invertible global s
ymmetry.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/49/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Philip Argyres (Cincinnati)
DTSTART;VALUE=DATE-TIME:20220630T160000Z
DTEND;VALUE=DATE-TIME:20220630T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/50
DESCRIPTION:Title: Vertex algebra of extended operators in 4d N=2 SCFTs\nby Philip Arg
yres (Cincinnati) as part of QFT and Geometry\n\n\nAbstract\nThe local Sch
ur operators of a 4d N=2 unitary SCFT form a vertex operator algebra. We c
onstruct a set of extended (line\, surface\, etc.) operators in twisted Sc
hur cohomology by descent. They form a vertex algebra\, extending the vert
ex operator algebra of the Schur operators.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/50/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Boris Pioline (Paris)
DTSTART;VALUE=DATE-TIME:20221020T160000Z
DTEND;VALUE=DATE-TIME:20221020T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/51
DESCRIPTION:by Boris Pioline (Paris) as part of QFT and Geometry\n\n\nAbst
ract\nThe spectrum of BPS states in N=2 string vacua famously jumps across
codimension-one walls in vector multiplet moduli space. The Split Attract
or Flow Conjecture postulates that the BPS index $\\Omega(\\gamma\,z)$ for
given charge $\\gamma$ and moduli $z$ can be reconstructed from the `attr
actor indices’ $\\Omega_*(\\gamma_i)$ counting BPS states of charge $\\g
amma_i$ in their respective attractor chamber\, by summing over all possib
le decompositions $\\gamma=\\sum_i \\gamma_i$ and over decorated rooted fl
ow trees. Physically\, flow trees provide a mesoscopic representation of B
PS states as nested multi-centered bound states of elementary constituents
. In this talk I will outline a proof of the SAFC for local $P^2$\, arguab
ly the simplest non-trivial example of Calabi-Yau threefold. \nwhere the f
ull set attractor indices can be determined. A key role is played by scatt
ering diagrams\, which appear to be the correct mathematical formalism for
the SAFC for non-compact CY threefolds. I will illustrate how this techno
logy can be used to determine the chamber structure for any charge. This i
s work in collaboration with Pierrick Bousseau\, Pierre Descombes and Brun
o Le Floch\, to appear on arXiv soon.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/51/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sheldon Katz (UIUC)
DTSTART;VALUE=DATE-TIME:20220811T160000Z
DTEND;VALUE=DATE-TIME:20220811T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/52
DESCRIPTION:by Sheldon Katz (UIUC) as part of QFT and Geometry\n\nAbstract
: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/52/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sheldon Katz (UIUC)
DTSTART;VALUE=DATE-TIME:20220908T160000Z
DTEND;VALUE=DATE-TIME:20220908T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/53
DESCRIPTION:by Sheldon Katz (UIUC) as part of QFT and Geometry\n\nAbstract
: TBA\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/53/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sheldon Katz (UIUC)
DTSTART;VALUE=DATE-TIME:20221006T160000Z
DTEND;VALUE=DATE-TIME:20221006T170000Z
DTSTAMP;VALUE=DATE-TIME:20240328T093147Z
UID:QFTandGeo/54
DESCRIPTION:Title: Topological String Partition Function on Noncommutative Resolutions
\nby Sheldon Katz (UIUC) as part of QFT and Geometry\n\n\nAbstract\nThis t
alk focuses on the Gopakumar-Vafa invariants of noncommutative resolutions
of compact Calabi-Yau threefolds with conifolds which do not admit a Kahl
er small resolution. I present and give evidence for a proposal for comp
uting these GV invariants using the enumerative geometry of all small reso
lutions considered simultaneously. The "Kahler" moduli space of any small
resolution X splits into disjoint copies corresponding to fractional B-fi
elds along the exceptional P^1s and indexed by the torsion subgroup of H^3
(X\,Z). In this way\, we get multiple large radius limits\, leading to mu
ltiple partition functions\, all determined by the Gopakumar-Vafa invarian
ts. The partition functions can be computed in many cases by B-model tech
niques on different mirrors corresponding to different choices of the frac
tional B-field. The main example discussed in this talk is Kuznetsov's non
commutative resolution of the double cover of P^3 branched along a degree
8 determinantal hypersurface. Many of the GV invariants deduced from the
B-model partition functions can be confirmed by enumerative geometry of th
e small resolutions after showing that the exceptional P^1's all represent
2-torsion classes in H_2(X\,Z). This talk is based on joint work in progr
ess with Albrecht Klemm\, Thorsten Schimannek\, and Eric Sharpe.\n
LOCATION:https://researchseminars.org/talk/QFTandGeo/54/
END:VEVENT
END:VCALENDAR