de Sitter attractors in generalized gravity
General Relativity and Quantum Cosmology
2009-11-10 v1
Abstract
We obtain conditions for the existence and stability of de Sitter attractors in the phase space of spatially homogeneous and isotropic cosmology in generalized theories of gravity (including non-linear and scalar-tensor theories). These conditions are valid for any form of the coupling functions of the theory. Stability with respect to inhomogeneous perturbations is analyzed using a covariant and gauge-invariant formalism. The relevance for inflationary scenarios of the early universe and for quintessence models of the present era is discussed.
Cite
@article{arxiv.gr-qc/0407021,
title = {de Sitter attractors in generalized gravity},
author = {Valerio Faraoni},
journal= {arXiv preprint arXiv:gr-qc/0407021},
year = {2009}
}
Comments
39 pages, LaTeX, to appear in Physical Review D