Brane World Cosmological Perturbations
High Energy Physics - Theory
2009-11-10 v1
Abstract
We consider a brane world and its gravitational linear perturbations. We present a general solution of the perturbations in the bulk and find the complete perturbed junction conditions for generic brane dynamics. We also prove that (spin 2) gravitational waves in the great majority of cases can only arise in connection with a non-vanishing anisotropic stress. This has far reaching consequences for inflation in the brane world. Moreover, contrary to the case of the radion, perturbations are stable.
Cite
@article{arxiv.hep-th/0403155,
title = {Brane World Cosmological Perturbations},
author = {Adenauer G. Casali and Elcio Abdalla and Bin Wang},
journal= {arXiv preprint arXiv:hep-th/0403155},
year = {2009}
}
Comments
16 pages, one figure