Reheating in Models with Non-minimal Coupling in metric and Palatini formalisms

We study reheating of inflationary models with general non-minimal coupling $K(ϕ)R$ with $K(ϕ)\sim \sqrt{V(ϕ)}$ where $R$ is the Ricci scalar and $V$ is the inflaton potential. In particular, when we take the monomial potential $K(ϕ) \propto ϕ^m$ with $m \in \mathbb{Z}_+$, we provide general analytic expressions for cosmological observables. We consider a wide range of non-minimal coupling $ξ\in [0, \infty)$ in metric and Palatini formalisms and derive the predictions for cosmological observables and the reheating temperature taking a general equation of state parameter $w_\text{reh}$.

No reviews yet.

No comments yet.