[hep-th] Seminar grupe za gravitaciju, čestice i polja, petak, 21. februar 2025.

[prlina]

Poštovane kolege,

najavljujem da će u petak, 21. februara, Tijana Radenković (Institut za 
fiziku) održati seminar na Institutu za fiziku.

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Naslov: 3BF teorija kao topološka kvantna teorija polja

Apstrakt: We study the path integral quantization of the topological 3BF 
theory, whose gauge symmetry is described by a 3-group. This theory is 
relevant for the quantization of general relativity coupled to Standard 
Model of elementary particles. We explicitly construct a state sum 
corresponding to the discretized path integral of a 3BF action. Being a 
topological invariant of 4-dimensional manifolds with boundary, this 
state sum gives rise to a topological quantum field theory (TQFT), 
realized as a functor between the category of cobordisms and the 
category of Hilbert spaces. After an introduction to appropriate 
category theory concepts and the construction of the state sum, we 
provide an explicit proof that it satisfies all Atiyah's axioms, and 
thus represents a genuine TQFT. The formulation of this TQFT represents 
a major step in the spinfoam quantization programme for a realistic 
theory of quantum gravity with matter.
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Seminar počinje u 11:15 uživo na Institutu za fiziku u sali 360 na 2. 
spratu. Osim toga, seminar se može pratiti i preko linka

https://gravityserver.ipb.ac.rs/b/mar-ae0-f4q-qww

Pozdrav,
Igor