Three-dimensional orbifolds by 2-groups

doi:10.1007/JHEP08(2023)138

Three-dimensional orbifolds by 2-groups

2023-08-21

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DOI：10.1007/JHEP08(2023)138

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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.

Keywords:

Discrete Symmetries

Global Symmetries

Field Theories in Lower Dimensions

Sigma Models

Three-dimensional orbifolds by 2-groups

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