Slow-roll Extended Quintessence

Details Slow-roll Extended Quintessence Slow-roll Extended Quintessence

2010-02-16

arxiv.org/abs/1002.2986v2

Phys.Rev.D81:083530,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

11 pages, 4 figures, references added, to appear in Phys. Rev. D

Scientific paper

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 $\ddot\phi/3H\dot\phi$ 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.

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