A generalization of decomposition in orbifolds
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Publication:825742
DOI10.1007/JHEP10(2021)134zbMATH Open1476.83164arXiv2101.11619OpenAlexW3205587090MaRDI QIDQ825742
Author name not available (Why is that?)
Publication date: 17 December 2021
Published in: (Search for Journal in Brave)
Abstract: This paper describes a generalization of decomposition in orbifolds. In general terms, decomposition states that two-dimensional orbifolds and gauge theories whose gauge groups have trivially-acting subgroups decompose into disjoint unions of theories. However, decomposition can be, at least naively, broken in orbifolds if the orbifold has discrete torsion in the trivially-acting subgroup. (Formally, this breaks finite global one-form symmetries.) Nevertheless, even in such cases, one still sees rudiments of decomposition. In this paper, we generalize decomposition in orbifolds to include such examples of discrete torsion, which we check in numerous examples. Our analysis includes as special cases (and in one sense generalizes) quantum symmetries of abelian orbifolds.
Full work available at URL: https://arxiv.org/abs/2101.11619
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