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Bibliographic Details
Main Authors: Robbins, Daniel, Vandermeulen, Thomas
Format: Preprint
Published: 2024
Subjects:
Online Access:https://arxiv.org/abs/2405.08058
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Table of Contents:
  • We define a Frobenius algebra over fusion categories of the form Rep$(G)\boxtimes$Rep$(G)$ which generalizes the diagonal subgroup of $G\times G$. This allows us to extend field theoretical constructions which depend on the existence of a diagonal subgroup to non-invertible symmetries. We give explicit calculations for theories with Rep$(S_3)\boxtimes$Rep$(S_3)$ symmetry, applying the results to gauging topological quantum field theories which carry this non-invertible symmetry. Along the way, we also discuss how Morita equivalence is implemented for algebras in symmetry categories.