Categorification of Dijkgraaf-Witten theory

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The goal of the paper is to categorify Dijkgraaf-Witten (DW) theory, aiming at providing foundation for a direct construction of DW theory as an Extended Topological Quantum Field Theory. The main tool is cohomology with coefficients in a Picard groupoid, namely the Picard groupoid of hermitian lines.

Original languageEnglish (US)
Pages (from-to)1023-1061
Number of pages39
JournalAdvances in Theoretical and Mathematical Physics
Issue number4
StatePublished - 2017

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