Inflection point of coupled quintessence

Abstract

In this paper, we investigate the behavior of coupled quintessence at inflection point in the accelerated expansion of the universe. We consider spatially homogeneous quintessence coupled with the matter with two coupling parameters as $Q=3\alpha H{\rho }_m$ and $Q=3\beta \dot{{\rho }_m}$. We obtain the inflection point for the power law form of potential $V\left(\varphi \right)=V_3{(\varphi -{\varphi }_0)}^3$ and its generalized form in two coupled quintessence models.