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Orbifold groupoids
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DOI：10.1007/JHEP02(2021)132.png)
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Abstract
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We review the properties of orbifold operations on two-dimensional quantum field theories, either bosonic or fermionic, and describe the Orbifold groupoids which control the composition of orbifold operations. Three-dimensional TQFT's of Dijkgraaf-Witten type will play an important role in the analysis. We briefly discuss the extension to generalized symmetries and applications to constrain RG flows.
Keywords:
Anomalies in Field and String Theories
Discrete Symmetries
Gauge Symmetry
Global Symmetries
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