Higher-derivative gravity in brane world models
High Energy Physics - Phenomenology
2009-11-11 v1 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We investigate brane world models in higher-derivative gravity theories where the gravitational Lagrangian is an arbitrary function of the Ricci scalar. Making use of the conformal equivalence of such gravity models and Einstein-Hilbert gravity with a scalar field, we deduce the main features of higher-derivative gravity brane worlds. We solve for a gravity model that has corrections quadratic in the Ricci scalar and show one can evade both fine-tuning and the need for a bulk cosmological constant. An analysis of tensor and scalar perturbations shows gravity is localized on the brane and we recover the Newtonian limit.
Keywords
Cite
@article{arxiv.hep-ph/0502048,
title = {Higher-derivative gravity in brane world models},
author = {M. Parry and S. Pichler and D. Deeg},
journal= {arXiv preprint arXiv:hep-ph/0502048},
year = {2009}
}
Comments
11 pages, 4 figures