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SUMMARY:Tudor Dimofte (UC Davis and University of Edinburgh)
DTSTART:20220308T193000Z
DTEND:20220308T203000Z
DTSTAMP:20260423T024507Z
UID:nhetc/33
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/nhetc/33/">A
  QFT for non-semisimple TQFT</a>\nby Tudor Dimofte (UC Davis and Universit
 y of Edinburgh) as part of NHETC Seminar\n\n\nAbstract\nTopological twists
  of 3d N=4 gauge theories naturally give rise to non-semisimple 3d TQFT's.
  In mathematics\, prototypical examples of the latter were constructed in 
 the 90's (by Lyubashenko and others) from representation categories of sma
 ll quantum groups at roots of unity\; they were recently generalized in wo
 rk of Costantino-Geer-Patureau Mirand and collaborators. I will introduce 
 a family of physical 3d quantum field theories that (conjecturally) reprod
 uce these classic non-semisimple TQFT's. The physical theories combine Che
 rn-Simons-like and 3d N=4-like sectors. They are also related to Feigin-Ti
 punin vertex algebras\, much the same way that Chern-Simons theory is rela
 ted to WZW vertex algebras.\n(Based on work with T. Creutzig\, N. Garner\,
  and N. Geer.)\n
LOCATION:https://researchseminars.org/talk/nhetc/33/
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