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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Acknowledgments
The authors would like to thank D. Robbins and T. Pantev for useful comments. A.P.L. would like to thank D. Pavlov, and U. Schreiber for useful suggestions on cohomology computations. E.S. was partially supported by NSF grant PHY-2014086.
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Perez-Lona, A., Sharpe, E. Three-dimensional orbifolds by 2-groups. J. High Energ. Phys. 2023, 138 (2023). https://doi.org/10.1007/JHEP08(2023)138
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DOI: https://doi.org/10.1007/JHEP08(2023)138