Pure geometric branes
arXiv:2410.11310 · doi:10.1016/j.physletb.2025.139718
Abstract
In this paper, we investigate pure geometric cosmology branes embedded in five-dimensional spacetime. The form of is chosen as a polynomial. The Five-dimensional scalar curvature is assumed to be constant. Based on the value of the four-dimensional cosmological constant , the branes can be classified into Minkowski, de Sitter, and de anti-de Sitter cases. Solutions for each case can be calculated. These solutions are stable against linear tensor perturbations in all cases. In the Minkowski brane case, the zero mode of gravity can be localized on the brane. In the de Sitter brane case, the zero mode and one massive Kaluza-Klein mode can be localized on the brane. In the anti-de Sitter brane case, all massive Kaluza-Klein modes can be localized on the brane. The results of the analysis of tensor fluctuations are the same in both the Einstein frame and the Jordan frame.
16 pages, 8 figures
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