Inflation in $$f(R,\phi )$$ f ( R , ϕ ) -theories and mimetic gravity scenario

We investigate inflation within $$f(R,\phi )$$ -theories, where a dynamical scalar field is coupled to gravity. A class of models which can support early-time acceleration with the emerging of an effective cosmological constant at high curvature is studied. The dynamics of the field allow for exit f... View More