Late time acceleration in Palatini gravity

Ignatios Antoniadis, Anthony Guillen, Kyriakos Tamvakis

We investigate the effect of the quadratic correction $\alpha R^2$ and non-minimal coupling $\xi {\varphi }^{2}R$ on a quintessence model with an exponential potential $V(\varphi )=M^4\exp (-\lambda \varphi )$ in the Pa…