Localization of abelian gauge fields with Stueckelberg-like geometrical coupling on -thick brane
arXiv:2302.02938 · doi:10.1140/epjc/s10052-023-11567-y
Abstract
In the context of modified teleparallel gravity, we investigate the influence of torsion scalar and boundary term on the confinement of both the gauge vector and Kalb-Ramond fields. Both fields require a suitable coupling in five-dimensional braneworld scenarios to yield a normalizable zero mode. We propose a Stueckelberg-like geometrical coupling that non-minimally couples the fields to the torsion scalar and boundary term. To set up our braneworld models, we use the first-order formalism in which two kinds of superpotential are taken: sine-Gordon and -deformed. The geometrical coupling is used to produce a localized zero mode. Moreover, we analyze the massive spectrum for both fields and obtain possible resonant massive modes. Furthermore, we do not find tachyonic modes leading to a consistent thick brane.
arXiv comment28 pages, 7 captioned figures, references added, Enhanced version to appear in European Physical Journal C
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