Curved dilatonic brane worlds
Abstract
We construct a broad family of exact solutions to the five-dimensional Einstein equations coupled to a scalar field with an exponential potential. Embedding a three-brane in these bulk space-times in a particular way we obtain a class of self-tuned curved brane worlds in which the vacuum energy on the brane is gravitationally idle, the four-dimensional geometry being insensitive to the value of the brane tension. This self-tuning arises from cancellations, enforced by the junction conditions, between the scalar field potential, the brane vacuum energy and the matter on the brane. Finally, we study some physically relevant examples and their dynamics.
Cite
@article{arxiv.hep-th/0105182,
title = {Curved dilatonic brane worlds},
author = {A. Feinstein and K. E. Kunze and M. A. Vazquez-Mozo},
journal= {arXiv preprint arXiv:hep-th/0105182},
year = {2009}
}
Comments
v2: 10 pages, RevTeX4. Minor changes. Typos corrected and references added. New paragraph included in the conclusions discussing the role of the singularities in the self-tuning mechanism. Final version to appear in Physical Review D