Abstract
In this paper we study three-dimensional orbifolds by 2-groups with a trivially-acting one-form symmetry group BK. These orbifolds have a global two-form symmetry, and so one expects that they decompose into (are equivalent to) a disjoint union of other three-dimensional theories, which we demonstrate. These theories can be interpreted as sigma models on 2-gerbes, whose formal structures reflect properties of the orbifold construction.
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Pantev, T., Robbins, D.G., Sharpe, E. et al. Orbifolds by 2-groups and decomposition. J. High Energ. Phys. 2022, 36 (2022). https://doi.org/10.1007/JHEP09(2022)036
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DOI: https://doi.org/10.1007/JHEP09(2022)036