Plane Symmetric Universe with Λ in f(R,T) Gravity

Abstract

In the present study, Plane symmetric cosmological models in f(R, T) theory of gravity with a term Λ have been studied. The gravitational field equations in the metric formalism, which follow from the covariant divergence of the stress-energy tensor, are obtained. The field equations correspond to a specific choice of f(R,T) = f₁(R) + f₂(T) with the individual superior functions f₁(R) = λR and f₂(R) = λT . The exact solutions of the field equations are obtained by considering a constant deceleration parameter which leads to two different aspects of the volumetric expansion, namely a power law and an exponential volumetric expansion. Some physical and geometric properties of the models along with physical acceptability of the solutions have also been discussed in detail.