Late time behavior of cosmological perturbations in a single brane model

Details Late time behavior of cosmological perturbations in a single brane model Late time behavior of cosmological perturbations in a single brane model

2004-07-13

arxiv.org/abs/astro-ph/0407263v2

JCAP 0409 (2004) 010

Astronomy and Astrophysics

Astrophysics

24 pages, 11 figures, discussions concerning a numerical accuracy added, final version to appear in JCAP

Scientific paper

10.1088/1475-7516/2004/09/010

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 Poincar\'e 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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