The effect of curvature in thawing models

TL;DR

This paper investigates how spatial curvature evolves in thawing dark energy models, providing analytical expressions for the equation of state parameter and constraining these models with observations.

Contribution

It offers new analytical formulas for the evolution of the dark energy equation of state in curvature-influenced thawing models and applies observational data to constrain them.

Findings

Analytical expressions for $w_\phi(\Omega_\phi, \Omega_k)$ and $w_\phi(a)$.

Constraints on curvature and dark energy parameters from observational data.

Insights into the evolution of spatial curvature in thawing dark energy scenarios.

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.