Slow-roll Extended Quintessence
Cosmology and Nongalactic Astrophysics
2014-11-20 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We derive the slow-roll conditions for a non-minimally coupled scalar field (extended quintessence) during the radiation/matter dominated era extending our previous results for thawing quintessence. We find that the ratio becomes constant but negative, in sharp contrast to the ratio for the minimally coupled scalar field. We also find that the functional form of the equation of state of the scalar field asymptotically approaches that of the minimally coupled thawing quintessence.
Cite
@article{arxiv.1002.2986,
title = {Slow-roll Extended Quintessence},
author = {Takeshi Chiba and Masaru Siino and Masahide Yamaguchi},
journal= {arXiv preprint arXiv:1002.2986},
year = {2014}
}
Comments
11 pages, 4 figures, references added, to appear in Phys. Rev. D