期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.231602
关键词
-
资金
- DOE [DE-FG02-92ER40701]
We study 't Hooft anomalies for a global discrete internal symmetry G. We construct examples of bosonic field theories in three dimensions with a nonvanishing 't Hooft anomaly for a discrete global symmetry. We also construct field theories in three dimensions with a global discrete internal symmetry G(1) x G(2) such that gauging G(1) necessarily breaks G(2) and vice versa. This is analogous to the Adler-BellJackiw axial anomaly in four dimensions and parity anomaly in three dimensions.
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