Flat and bent branes with inner structure in two-field mimetic gravity

Autor: Xiang Qian, Zhong Yi, Xie Qun-Ying, Zhao Li
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Open Physics, Vol 21, Iss 1, Pp 263-72 (2023)
Druh dokumentu: article
ISSN: 2391-5471
DOI: 10.1515/phys-2022-0225
Popis: Inspired by the work Zhong et al. (2018), we study the linear tensor perturbation of both the flat and bent thick branes with inner structure in two-field mimetic gravity. The master equations for the linear tensor perturbations are derived by taking the transverse and traceless gauges. For the Minkowski and Anti-de-Sitter brane, the brane systems are stable against the tensor perturbation. The effective potentials of the tensor perturbations of both the flat and bent thick branes are volcano-like, and this structure may potentially lead to the zero-mode and the resonant modes of the tensor perturbation. We further illustrate the results of massive resonant modes.
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