f(R,T) models applied to baryogenesis

This paper is devoted to the reproduction of the gravitational baryogenesis epoch in the context of f(R,T) theory of gravity, where R and T are respectively the curvature scalar and the trace of the energy-momentum tensor, respectively. It is assumed a minimal coupling between matter and gravity. In particular we consider the following two models, f(R,T)=R+T+T2 and f(R,T)=R+R2+T, with the assumption that the universe is filled by dark energy and perfect fluid where the baryon to entropy ratio during a radiation domination era is non-zero. We constrain the models with the cosmological gravitational baryogenesis scenario, highlighting the appropriate values of model's parameters compatible with the observation data of the baryon-entropy ratio.