A higher category of cobordisms and topological quantum field theory

Details A higher category of cobordisms and topological quantum field theory A higher category of cobordisms and topological quantum field theory

2011-08-16

arxiv.org/abs/1108.3349v2

Mathematics

Quantum Algebra

37 pages, 5 figures; In Version 2 a few misprints corrected, references added

Scientific paper

The goal of this work is to describe a categorical formalism for (Extended) Topological Quantum Field Theories (TQFTs) and present them as functors from a suitable category of cobordisms with corners to a linear category, generalizing 2d open-closed TQFTs to higher dimensions. The approach is based on the notion of an n-fold category by C. Ehresmann, weakened in the spirit of monoidal categories (associators, interchangers, Mac Lane's pentagons and hexagons), in contrast with the simplicial (weak Kan and complete Segal) approach of Jacob Lurie. We show how different Topological Quantum Field Theories, such as gauge, Chern-Simons, Yang-Mills, WZW, Seiberg-Witten, Rozansky-Witten, and AKSZ theories, as well as sigma model, may be described as functors from the pseudo n-fold category of cobordisms to a pseudo n-fold category of sets.

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