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SUMMARY:Dan Freed (Univ. Texas at Austin)
DTSTART:20230215T163000Z
DTEND:20230215T173000Z
DTSTAMP:20260423T021439Z
UID:TQFT/75
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/TQFT/75/">Wh
 at is an anomaly?</a>\nby Dan Freed (Univ. Texas at Austin) as part of Top
 ological Quantum Field Theory Club (IST\, Lisbon)\n\n\nAbstract\nAnomalies
  in quantum field theory have been the subject of attention for decades.  
 In this talk I will dispel some myths: anomalies are tied to symmetry\, an
 omalies are tied to fermionic fields\, etc.  Then I will explain how anoma
 lies - expressed as invertible field theories - are the manifestation of t
 he projectivity of quantum field theory.  My point of view is summarized b
 y a slogan:\n\n            Quantum theory is projective.  Quantization is 
 linear.\n\nPlease note the earlier starting time\, half an hour before the
  usual time.\n
LOCATION:https://researchseminars.org/talk/TQFT/75/
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