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SUMMARY:Ryan Thorngren (Harvard University)
DTSTART:20211011T190000Z
DTEND:20211011T200000Z
DTSTAMP:20260423T052956Z
UID:WHCGP/40
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/WHCGP/40/">A
  Tour of Categorical Symmetry</a>\nby Ryan Thorngren (Harvard University) 
 as part of Western Hemisphere colloquium on geometry and physics\n\n\nAbst
 ract\nA categorical symmetry is a category acting as a symmetry of a QFT. 
 These symmetries correspond to the topological operators in the QFT. I'll 
 try to motivate this definition with some simple examples. Then I'll discu
 ss a bulk-boundary correspondence which in finite situations allows us to 
 classify gapped phases with categorical symmetry and define things like an
 omalous symmetries and gauging. I'll conclude with some more examples of t
 opological operators in c = 1 CFTs and describe a Noether theorem for cont
 inuous categorical symmetries.\n
LOCATION:https://researchseminars.org/talk/WHCGP/40/
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