期刊
PHYSICS LETTERS B
卷 808, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physletb.2020.135672
关键词
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资金
- Japan Society of Promotion of Science (JSPS) [17H06462, 18H01211, 18H01217]
- Grants-in-Aid for Scientific Research [17H06462] Funding Source: KAKEN
We study higher-form symmetries in a low-energy effective theory of a massless axion coupled with a photon in (3 + 1) dimensions. It is shown that the higher-form symmetries of this system are accompanied by a semistrict 3-group (2-crossed module) structure, which can be found by the correlation functions of symmetry generators of the higher-form symmetries. We argue that the Witten effect and anomalous Hall effect in the axion electrodynamics can be described in terms of 3-group transformations. (C) 2020 The Author(s). Published by Elsevier B.V.
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