A tensor instability in the Eddington inspired Born-Infeld Theory of Gravity
General Relativity and Quantum Cosmology
2012-05-08 v2 Cosmology and Nongalactic Astrophysics
Abstract
In this paper we consider an extension to Eddington's proposal for the gravitational action. We study tensor perturbations of a homogeneous and isotropic space-time in the Eddington regime, where modifications to Einstein gravity are strong. We find that the tensor mode is linearly unstable deep in the Eddington regime and discuss its cosmological implications.
Keywords
Cite
@article{arxiv.1204.1691,
title = {A tensor instability in the Eddington inspired Born-Infeld Theory of Gravity},
author = {Celia Escamilla-Rivera and Maximo Banados and Pedro G. Ferreira},
journal= {arXiv preprint arXiv:1204.1691},
year = {2012}
}
Comments
5 pages, approved by Phys. Rev. D, additional references and minor modifications