The radion in brane cosmology
High Energy Physics - Theory
2009-10-07 v2 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We consider the homogeneous cosmological radion, which we define as the interbrane distance in a two brane and symmetrical configuration. In a coordinate system where one of the brane is at rest, the junction conditions for the second (moving) brane give directly the (non-linear) equations of motion for the radion. We analyse the radion fluctuations and solve the non-linear dynamics in some simple cases of interest.
Keywords
Cite
@article{arxiv.hep-th/0101234,
title = {The radion in brane cosmology},
author = {Pierre Binétruy and Cédric Deffayet and David Langlois},
journal= {arXiv preprint arXiv:hep-th/0101234},
year = {2009}
}
Comments
24 pages, 4 figures; two figures completed and some comments added in section 7.2; a small section 7.3 added on Randall-Sundrum type of models; some references added