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arXiv · 2411.04749

Berry phase in axion physics, SM global structure, and generalized symmetries

Qing-Hong Cao·Shuailiang Ge·Yandong Liu·Jun-Chen Wang
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Abstract

We investigate the Berry phase arising from axion-photon and axion-fermion interactions. The effective Hamiltonians in both systems share the same form, enabling a unified description of the Berry phase and providing a novel perspective on axion experiments. We conceptually propose a new photon-ring experiment for axion detection. Furthermore, we demonstrate that measuring the axion-induced Berry phase offers a unique method for probing the global structure of the Standard Model gauge group and axion-related generalized symmetries.

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Qing-Hong Cao, Shuailiang Ge, Yandong Liu, Jun-Chen Wang. 2024-11-07. Berry phase in axion physics, SM global structure, and generalized symmetries. https://doi.org/10.1016/j.physletb.2026.140218

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