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Three-dimensional orbifolds by 2-groups (2303.16220v2)
Published 28 Mar 2023 in hep-th
Abstract: In this paper we generalize previous work on decomposition in three-dimensional orbifolds by 2-groups realized as analogues of central extensions, to orbifolds by more general 2-groups. We describe the computation of such orbifolds in physics, state a version of the decomposition conjecture, and then compute in numerous examples, checking that decomposition works as advertised.
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