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The effect of curvature in thawing models

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arxiv 1010.2477 v1 pith:S5EHUPDO submitted 2010-10-12 astro-ph.CO gr-qchep-phhep-th

Sergio del Campo , Victor H. Cardenas , Ramon Herrera This is my paper · ORCID
classification astro-ph.COgr-qchep-phhep-th
keywords modelscurvatureevolutionomegascalarthawinganalyticalapproximate
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abstract

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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  1. Higher-Order Analytical Expansion of Thawing Dark Energy with an Exponential Potential

    astro-ph.CO 2026-08 conditional novelty 6.0 of 10

    For exponential-potential quintessence, a new fourth-order analytic correction, including a background expansion correction, improves the predicted dark energy equation of state compared with the leading-order thawing...

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