Localization of (1) gauge field by non-minimal coupling with gravity in braneworlds

Abstract In this paper, we investigate the localization of the U(1) gauge field on Randall-Sundrum-like braneworld models. The localization of the U(1) gauge field is important because it plays a fundamental role in the branworld theories. To achieve the localization, we propose a novel action with...

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Published inJournal of cosmology and astroparticle physics Vol. 2023; no. 7; pp. 10 - 20
Main Authors Zhao, Zhen-Hua, Xie, Qun-Ying, Fu, Chun-E., Zhou, Xiang-Nan
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.07.2023
Subjects
cosmology of theories beyond the SM
extra dimensions
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Summary:Abstract In this paper, we investigate the localization of the U(1) gauge field on Randall-Sundrum-like braneworld models. The localization of the U(1) gauge field is important because it plays a fundamental role in the branworld theories. To achieve the localization, we propose a novel action with a non-minimal coupling between the U(1) gauge field and gravity. We find that the mass spectrum of the gauge field is continuous, without any gap between the zero-mass mode and the massive modes, and except for the zero-mass mode all the massive modes are not localized on the brane. Furthermore, the massive modes have negative squared masses, indicating they are tachyonic. Our analysis can be applied to a wide range of thin and thick braneworld scenarios, provided that the five-dimensional spacetime is asymptotically anti-de Sitter.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2023/07/010