Seminar za teoriju relativnosti i kosmološke modele, 6. novembar 2019.

Naredni sastanak Seminara biće održan u sredu, 6. novembra 2019. u sali 301f Matematičkog instituta SANU sa početkom u 11 časova.

Predavač: Marko Vojinović, Group for Gravitation, Particles and Fields, Institute of Physics, University of Belgrade

Naslov predavanja: 3-CATEGORIES, 3-GROUPS, AND HIGHER GAUGE THEORY OF GRAVITY

Apstrakt: We will describe the application of the cateogory theory formalism to fundamental physics. After a short introduction into the notions of 2-groups and 3-groups, we will give a step-by-step overview of the gauge theory construction based on a notion of a 3-group. This is an known as higher gauge theory, based on general ideas of Baez and Huerta. We will discuss which 3-group reproduces the Standard Model and Einstein-Cartan gravity at the classical level. The main novelty, compared to standard quantum field theory constructions, is that the 3-group structure features a structure intimately connected to the fermion and scalar sectors of the Standard Model. This could open new avenues for research on unification of all interactions and matter.



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