Super inflation mechanism with oscillating scalar fields in F (R, T) gravity

Abstract

The purpose of this study is to explain the super inflation scenario for the early universe with scalar field which is minimally coupled with theory of F(R,T) gravity, where R is the Ricci curvature scalar and T is the trace of the energy-momentum tensor (EMT). We consider the model F(R,T) = R + f1(R) + f2(T), where the curvature is minimally coupled with matter. All the modification terms are properly compacted in f2(T), by means of a unified solution. After a vacuum inflation, it is observed that the scalar field oscillations via the power-term in potential n naturally produce the quintessential type of dark energy. Then, we observe that the matter is created by this type of dark energy during inflation. Also, the spectral index parameter and the tensor-to-scalar ratio are examined for this inflation mechanism. © 2018 World Scientific Publishing Company.