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DTSTART;TZID=America/New_York:20240826T090000
DTEND;TZID=America/New_York:20240828T170000
DTSTAMP:20260414T094957
CREATED:20240209T180835Z
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SUMMARY:Advances in Probability Theory and Interacting Particle Systems
DESCRIPTION:Advances in Probability Theory and Interacting Particle Systems\n\nA conference in honor of S. R. Srinivasa Varadhan.\n\nAugust 26 – August 28\, 2024\n\nHarvard Geological Lecture Hall\n\n\nConference Website: www.math.harvard.edu/event/math-conference-honoring-srinivasa-varadhan\n\nSpeakers\n\n\nInes Armendariz\, Universidad de Buenos Aires\nYuri Bakhtin\, Courant Institute\nGérard Ben Arous\, Courant Institute\nSourav Chatterjee\, Stanford University\nAmir Dembo\, Stanford University\nPeter K. Friz\, TU-Berlin\nNina Holden\, Courant Institute\nJiaoyang Huang\, University of Pennsylvania\nElena Kosygina\, City University of New York\nClaudio Landim\, IMPA\nEyal Lubetzky\, Courant Institute\nChiranjib Mukherjee\, Uni Münster\nStefano Olla\, Université Paris Dauphine\nJeremy Quastel\, University of Toronto\nKavita Ramanan\, Brown University\nAlejandro Ramirez\, NYU Shanghai\nFraydoun Rezakhanlou\, Berkeley\nSunder Sethuraman\, University of Arizona\nScott Sheffield\, MIT\nOfer Zeitouni\, Weizmann Institute\n\nOrganizers: Paul Bourgade (New York University\, Courant Institute) and Horng-Tzer Yau (Harvard University).\n\n\nSponsored by Harvard University Department of Mathematics and the Center of Mathematical Studies and Applications (CMSA).\n\nHarvard University is committed to maintaining a safe and healthy educational and work environment in which no member of the University community is\, on the basis of sex\, sexual orientation\, or gender identity\, excluded from participation in\, denied the benefits of\, or subjected to discrimination in any University program or activity. More information can be found here.
URL:https://cmsa.fas.harvard.edu/event/advances-in-probability-theory-and-interacting-particle-systems/
LOCATION:Harvard Geological Lecture Hall\, 24 Oxford St\, Cambridge\, 02138\, United States
CATEGORIES:Conference,Event
ATTACH;FMTTYPE=application/pdf:https://cmsa.fas.harvard.edu/media/Varadhan-Poster.pdf
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DTSTART;TZID=America/New_York:20240828T140000
DTEND;TZID=America/New_York:20240828T153000
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CREATED:20240822T161627Z
LAST-MODIFIED:20240826T155342Z
UID:10003416-1724853600-1724859000@cmsa.fas.harvard.edu
SUMMARY:Instanton in Lattice QCD from Higher Categories and Higher Anafunctors
DESCRIPTION:Speaker: Jing-Yuan Chen\, Tsinghua University \nTitle: Instanton in Lattice QCD from Higher Categories and Higher Anafunctors\n\n\nAbstract:  Putting continuum QFT (not just TQFT) on the lattice is important for both fundamental understandings and practical numerics. The traditional way of doing so\, based on simple intuitions\, however\, does not admit natural definitions for general topological operators of continuous-valued fields—one such example is the long standing problem in lattice QCD of lacking a natural definition for Yang-Mills instantons.\nIn this talk\, I will explain a more systematic way to relate continuum and lattice QFT\, based on higher categories and higher anafunctors\, so that the topological operators in the continuum can be naturally defined on the lattice. The idea\, though formulated formally\, is physically very intuitive—we want to effectively capture the different possibilities of how a lattice field may interpolate into the continuum\, so the higher categories that are employed to study higher homotopy theory should be naturally involved. Via this formalism\, we resolve the long-standing problem of defining instanton (as well as Chern-Simons term) in lattice Yang-Mills theory\, in terms of multiplicative bundle gerbes. Moreover\, when the fields become discrete\, our formalism can recover the Dijkgraaf-Witten and Turaev-Viro theory\, so we hope this formalism to be a good starting point towards (in the very long term) a comprehensive categorical understanding of QFT that encompass both continuous and discrete degrees of freedom\, applicable both to IR and to UV.
URL:https://cmsa.fas.harvard.edu/event/qm_82824/
LOCATION:CMSA Room G10\, CMSA\, 20 Garden Street\, Cambridge\, MA\, 02138\, United States
CATEGORIES:Quantum Matter
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-QMMP-08.28.2024.png
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