LAUSR

The main purpose of this paper is to investigate LRS Bianchi type I metric in the presence of perfect fluid and dark energy. In order to obtain a deterministic solution of the field equations we have assumed that the two sources of the perfect fluid and dark energy interact minimally with separate conservation of their energy–momentum tensors as well EoS parameter of the perfect fluid is assumed to be constant. In addition to this we have used a special law of variation of Hubble parameter proposed by Berman that yields constant deceleration parameter. For the two different constant values of deceleration we have obtained two different cosmological models. The physical behaviors of both the models have been discussed by using MATLAB.