Cosmology inflation in viscous mimetic f(R,T) gravity

Abstract

We investigate in this work the inflationary scenario in viscous [Formula: see text] gravity formalism with mimetic potential and Lagrange multiplier. Considering that our universe contains beside a perfect fluid, a dark energy and a bulk viscous fluid, we obtain through the modified Friedmann equations a main differential equation that may describe the cosmological evolution in viscous mimetic [Formula: see text] gravity. For particular choice of the model [Formula: see text] and for two forms of bulk viscosity coefficient, one as function of the Hubbe parameter [Formula: see text] and the other, as density-dependent viscosity, we present a numerical results of the inflationary parameters such as the tensor-to-scalar ratio [Formula: see text] and the scalar spectral index [Formula: see text]. A comparison of these results with observational data shows that our model can be used to describe the accelerated expansion of the universe.