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DTSTART;TZID=America/New_York:20231215T100000
DTEND;TZID=America/New_York:20231215T113000
DTSTAMP:20260504T093511
CREATED:20240222T093357Z
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UID:10002796-1702634400-1702639800@cmsa.fas.harvard.edu
SUMMARY:Exact lattice chiral symmetry in 2d gauge theory
DESCRIPTION:Quantum Matter Seminar \nSpeaker: Aleksey Cherman (UMN) \nTitle: Exact lattice chiral symmetry in 2d gauge theory \nAbstract: Preserving the symmetries of massless fermions is a well-known challenge in lattice field theory.  I’ll discuss symmetry-preserving lattice regularizations of 2d QED with one and two flavors of Dirac fermions\, as well as the `3450′ chiral gauge theory. The construction leverages bosonization and recently-proposed modifications of Villain-type lattice actions. The internal global symmetries act just as locally on the lattice as they do in the continuum\, the anomalies are reproduced at finite lattice spacing\, and in each case we’ve found a sign-problem-free dual formulation.
URL:https://cmsa.fas.harvard.edu/event/qm_121523/
LOCATION:Virtual
CATEGORIES:Quantum Matter
ATTACH;FMTTYPE=image/png:https://cmsa.fas.harvard.edu/media/CMSA-QMMP-12.15.23.png
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