Brane-world inflation without inflaton on the brane
General Relativity and Quantum Cosmology
2009-10-09 v4 Astrophysics
High Energy Physics - Theory
Abstract
Inspired by the Randall-Sundrum brane-world scenario, we investigate the possibility of brane-world inflation driven not by an inflaton field on the brane, but by a bulk, dilaton-like gravitational field. As a toy model for the dilaton-like gravitational field, we consider a minimally coupled massive scalar field in the bulk 5-dimensional spacetime, and look for a perturbative solution in the anti-de Sitter (AdS) background. For an adequate range of the scalar field mass, we find a unique solution that has non-trivial dependence on the 5th dimensional coordinate and that induces slow-roll inflation on the brane.
Keywords
Cite
@article{arxiv.gr-qc/0010035,
title = {Brane-world inflation without inflaton on the brane},
author = {Yoshiaki Himemoto and Misao Sasaki},
journal= {arXiv preprint arXiv:gr-qc/0010035},
year = {2009}
}
Comments
10 pages, 2 figures, final version, to be published in Phys. Rev. D