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arXiv · 2204.13708

Orbifolds by 2-groups and decomposition

T. Pantev·D. Robbins·E. Sharpe·T. Vandermeulen
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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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T. Pantev, D. Robbins, E. Sharpe, T. Vandermeulen. 2022-05-10. Orbifolds by 2-groups and decomposition. https://doi.org/10.1007/jhep09(2022)036

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