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Late time behavior of cosmological perturbations in a single brane model

Kazuya Koyama
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Abstract

We present solutions for the late time evolution of cosmological tensor and scalar perturbations in a single-Randall-Sundrum brane world model. Assuming that the bulk is anti-de Sitter spacetime, the solutions for cosmological perturbations are derived by summing mode functions in Poincaré coordinate. The junction conditions imposed at the moving brane are solved numerically. The recovery of 4-dimensional Einstein gravity at late times is shown by solving the 5-dimensional perturbations throughout the infinite bulk. We also comment on several possibilities for having deviations from 4-dimensional Einstein gravity.

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Kazuya Koyama. 2004-09-08. Late time behavior of cosmological perturbations in a single brane model. https://doi.org/10.1088/1475-7516%2F2004%2F09%2F010

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