Modified gravity models for inflation: In conformity with observations

We consider a modified gravity framework for inflation by adding to the Einstein-Hilbert action direct $f(\phi)T$ term, where $\phi$ is identified as inflaton and $T$ trace of energy-momentum tensor. The goes Einstein naturally when decays out. investigate dynamics in this (not be confused with torsion-scalar coupled theories) on general basis then apply it three well-motivated inflationary models. find that predictions spectral tilt tensor-to-scalar ratio are sensitive new term. This brings chaotic natural into better agreement data allows larger Starobinsky model.