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DTSTART;TZID=America/New_York:20241203T161500
DTEND;TZID=America/New_York:20241203T181500
DTSTAMP:20260408T115909
CREATED:20240917T162348Z
LAST-MODIFIED:20241104T152406Z
UID:10003517-1733242500-1733249700@cmsa.fas.harvard.edu
SUMMARY:Factorization Homology
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeakers: Sunghyuk Park and Vasily Krylov\, Harvard CMSA \nTitle: Factorization Homology
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_12324/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241120T163000
DTEND;TZID=America/New_York:20241120T173000
DTSTAMP:20260408T115909
CREATED:20241120T165843Z
LAST-MODIFIED:20241120T172458Z
UID:10003622-1732120200-1732123800@cmsa.fas.harvard.edu
SUMMARY:Perturbative Factorization Algebras
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Ahsan Khan\n\n\n\nTitle: Perturbative Factorization Algebras\n\nAbstract: In physics the starting point in studying a QFT is to write down an appropriate action functional. My talk will aim to sketch how this connects with the framework of factorization algebras.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_112024/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Geometry-Quantum-Theory-11.20.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241105T161500
DTEND;TZID=America/New_York:20241105T181500
DTSTAMP:20260408T115909
CREATED:20240917T160718Z
LAST-MODIFIED:20241104T184936Z
UID:10003512-1730823300-1730830500@cmsa.fas.harvard.edu
SUMMARY:Introduction to Factorization algebras
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Dan Freed\, Harvard University \nTitle: Introduction to Factorization algebras
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_11524/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Geometry-Quantum-Theory-11.5.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241029T161500
DTEND;TZID=America/New_York:20241029T181500
DTSTAMP:20260408T115909
CREATED:20240917T160658Z
LAST-MODIFIED:20241015T150203Z
UID:10003511-1730218500-1730225700@cmsa.fas.harvard.edu
SUMMARY:Boundaries and duality for 3d gauge theories
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Ben Gammage\, Harvard University \nTitle: Boundaries and duality for 3d gauge theories \nAbstract: 3d N=4 supersymmetric gauge theory has a pair of topological twists\, the A-model and B-model\, the latter of which is also known as Rozansky-Witten theory. Conjecturally\, boundary conditions for these TFTs ought to admit descriptions in terms of (microlocal) perverse or coherent sheaves of categories\, respectively. Unfortunately\, neither of these admits a general mathematical definition; nevertheless\, in some cases these are well-defined 2-categories. We will survey these situations and the duality\, known as 3d mirror symmetry\, which relates the A- and B-models of different theories\, together with its relation to the relative Langlands duality of Ben-Zvi–Sakellaridis-Venkatesh.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_102924/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Geometry-Quantum-Theory-10.29.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241022T161500
DTEND;TZID=America/New_York:20241022T181500
DTSTAMP:20260408T115909
CREATED:20240917T160638Z
LAST-MODIFIED:20241007T195901Z
UID:10003510-1729613700-1729620900@cmsa.fas.harvard.edu
SUMMARY:Fusion 2-Categories and their Classification
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Thibault Décoppet\, Harvard University \nTitle: Fusion 2-Categories and their Classification \nAbstract: Categorifying the classical notion of fusion (1-)category\, fusion 2-categories were recently introduced. These objects have found many applications in Physics\, most notably to the classification of topological orders\, but also to the description of non-invertible symmetries in 2+1 dimensions. The first part of this talk will be devoted to reviewing the definition of a fusion 2-category and giving many examples. In the second half\, I will present a remarkable result concerning the Morita theory of fusion 2-categories and explain how it can be used to give a homotopy coherent classification of fusion 2-categories. \n 
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_102224/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Geometry-Quantum-Theory-10.22.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241015T161500
DTEND;TZID=America/New_York:20241015T181500
DTSTAMP:20260408T115909
CREATED:20240917T162135Z
LAST-MODIFIED:20240927T182405Z
UID:10003514-1729008900-1729016100@cmsa.fas.harvard.edu
SUMMARY:Topological Modular Forms\, its equivariant refinements and relation with supersymmetric quantum field theories
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Mayuko Yamashita\, Kyoto University \nTitle: Topological Modular Forms\, its equivariant refinements and relation with supersymmetric quantum field theories \nAbstract: This talk is about the Segal-Stolz-Teichner program\, which is one of the most deep and interesting topics relating homotopy theory and physics. Mathematically\, they propose a geometric model of TMF\, the spectrum (in homotopy theory) of Topological Modular Forms\, in terms of supersymmetric quantum field theories. Their proposal\, although far from solid formulation or a proof\, has been a guiding principle leading us to many new interesting ideas and discoveries in both mathematics and physics. In this talk\, I will give an overview of this topic\, as well as my current works using equivariant twisted TMF.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_101524/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Geometry-Quantum-Theory-10.15.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241008T161500
DTEND;TZID=America/New_York:20241008T181500
DTSTAMP:20260408T115909
CREATED:20240917T160554Z
LAST-MODIFIED:20241004T150540Z
UID:10003509-1728404100-1728411300@cmsa.fas.harvard.edu
SUMMARY:Skein traces and curve counting
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Sunghyuk Park\, Harvard CMSA \nTitle: Skein traces and curve counting \nAbstract: Skein modules are vector space-valued invariants of 3-manifolds describing the space of line defects modulo skein relations (determined by a choice of a ribbon category). When the 3-manifold is S x I for some surface S\, the skein module has a natural algebra structure and is called the skein algebra of S. \nIn 2010\, Bonahon and Wong constructed an algebra embedding (named “quantum trace”) of the sl_2 skein algebra into a quantum cluster variety called the “quantum Teichmuller space” for punctured surfaces\, which has applications to the representation theory of skein algebras. \nIn the first half of this talk\, I will give an overview of these concepts and explain how the quantum trace map can be generalized to the 3-dimensional setup. \nIn the second half\, I will discuss how everything above can be generalized to HOMFLYPT skeins and has natural interpretation in terms of counts of holomorphic curves.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_10824/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Geometry-Quantum-Theory-10.8.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241001T161500
DTEND;TZID=America/New_York:20241001T181500
DTSTAMP:20260408T115909
CREATED:20240916T141133Z
LAST-MODIFIED:20240927T182238Z
UID:10003506-1727799300-1727806500@cmsa.fas.harvard.edu
SUMMARY:Topological Invariants of gapped states through cosheaves
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Bowen Yang\, Harvard CMSA \nTitle: Topological Invariants of gapped states through cosheaves \nAbstract: We provide a proper mathematical framework for the constructions of topological invariants of gapped quantum states and interpret topological invariants of gapped states as lattice analogs of ’t Hooft anomalies in Quantum Field Theory. Our secondary goal is to generalize this construction in various directions. In particular\, we show how to define topological invariants of lattice spin systems living on well-behaved subsets of the lattice.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_10124/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Geometry-Quantum-Theory-10.1.2024.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240924T161500
DTEND;TZID=America/New_York:20240924T181500
DTSTAMP:20260408T115909
CREATED:20240907T180814Z
LAST-MODIFIED:20240924T145311Z
UID:10003455-1727194500-1727201700@cmsa.fas.harvard.edu
SUMMARY:Symplectic duality in examples
DESCRIPTION:Geometry and Quantum Theory Seminar \nSpeaker: Vasily Krylov\, Harvard CMSA & Math \nTitle: Symplectic duality in examples \nAbstract: Over the past twenty years\, mathematicians and physicists have shown increasing interest in studying certain Poisson varieties\, known as “symplectic singularities.” Many of these objects naturally arise as Higgs or Coulomb branches of certain TQFTs and\, therefore\, fall within the framework of 3D mirror symmetry\, also known as symplectic duality. The first part of the talk will provide a gentle introduction to the theory of symplectic singularities\, with an emphasis on various examples. In the second part\, we will discuss how the symplectic duality works in examples\, beginning with the simplest cases. We will then discuss a particular phenomenon called the Hikita-Nakajima conjecture\, which predicts a deep and nontrivial relationship between dual varieties. It is particularly intriguing that this conjecture was formulated by mathematicians and still requires further understanding from a physical perspective.
URL:https://cmsa.fas.harvard.edu/event/quantumgeo_92424/
LOCATION:Science Center Hall E\, 1 Oxford Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Geometry and Quantum Theory Seminar
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-Geometry-Quantum-Theory-09.24.2024.png
END:VEVENT
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