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X-FROM-URL:https://eom.sdu.dk/events/ical/05d254f4-8506-45ff-93b9-82dd64bd
 8764
X-WR-CALNAME:QM Research Seminar: Gauging non-invertible symmetries in 3d 
 TFT
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TZID:Europe/Copenhagen
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DTSTAMP:20260714T023938Z
DTSTART:20261028T030000
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DESCRIPTION:[b]Speaker: Ingo Runkel [/b](​University of Hamburg)\n\n[b]Abs
 tract:[/b]\nGiven a suitable ribbon category C and a so-called orbifold d
 atum A in C\, one can obtain a new ribbon category C_A. This construction
  subsumes several well-known examples\, such as the Drinfeld centre of a 
 spherical fusion category\, passing to the category of local modules of a
  commutative algebra in C\, and equivariantisation of a G-crossed ribbon 
 category. In a 3d TFT Z which has C as category of line defects\, A can b
 e interpreted as a "gaugeable (possibly non-invertible) symmetry"\, and C
 _A as the line defects in the gauged theory Z/A. The state spaces of Z/A 
 can be described in terms of commuting projector Hamiltonians acting on s
 tate spaces of Z\, giving a variant of the Levin-Wen construction.\nThis 
 is joint work with N. Carqueville\, V. Mulevicius\, G. Schaumann\, D. Sch
 erl\, and T. Voß.
DTEND:20260223T150000Z
DTSTAMP:20260714T023938Z
DTSTART:20260223T140000Z
LOCATION:Syddansk Universitet\, Campusvej 55\, 5230\, Odense M
SEQUENCE:0
SUMMARY:QM Research Seminar: Gauging non-invertible symmetries in 3d TFT
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