Berry phase in axion physics, SM global structure, and generalized symmetries
Qing-Hong Cao, Shuailiang Ge, Yandong Liu, Jun-Chen Wang
TL;DR
This paper explores the Berry phase in axion interactions, proposing a new experimental approach for axion detection and offering insights into the Standard Model's global structure and generalized symmetries.
Contribution
It introduces a unified framework for Berry phases in axion-photon and axion-fermion systems and proposes a novel photon-ring experiment for axion detection.
Findings
Unified description of Berry phase in axion systems
Proposal of a photon-ring experiment for axion detection
Berry phase measurement as a probe of Standard Model symmetries
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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