Five-Dimensional Exact Bianchi Type-I Cosmological Models in a Scalar-Tensor Theory

Abstract

The present study deals with a spatially homogeneous and anisotropic five dimensional Bianchi type-I cosmological models filled with perfect fluid in the frame work of scalar-tensor theory proposed by Seaz and Ballester (1985). Two different physically viable models (n ≠ 0, n = 0) of the universe are obtained by using a special law of variation for hubble’s parameter which gives a constant value of deceleration parameter. The Einstein’s field equations are solved exactly and solutions are obtained. Also physical and kinematical properties of the models are discussed.