A simple $F(\mathcal{R},\varphi )$ deformation of Starobinsky inflationary model

Dhimiter D. Canko, Ioannis D. Gialamas, George P. Kodaxis

We study a model including a real scalar field $\varphi$ non-minimally coupled to $F(\mathcal{R})$ gravity, which is conformally equivalent to an Einstein-Hilbert theory, involving two real…