The effect of curvature in thawing models

Details The effect of curvature in thawing models The effect of curvature in thawing models

2010-10-12

arxiv.org/abs/1010.2477v1

Phys.Lett.B694:279-283,2011

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

14 pages, 6 figures. Accepted for publication in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2010.10.009

We study the evolution of spatial curvature for thawing class of dark energy models. We examine the evolution of the equation of state parameter, $w_\phi$, as a function of the scale factor $a$, for the case in which the scalar field $\phi$ evolve in nearly flat scalar potential. We show that all such models provide the corresponding approximate analytical expressions for $w_\phi(\Omega_\phi,\Omega_k)$ and $w_\phi(a)$. We present observational constraints on these models.

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