English

LRS Bianchi type-I bulk viscous cosmological models in $f(R,T)$ gravity

General Relativity and Quantum Cosmology 2018-03-29 v2

Abstract

We have studied the locally rotationally symmetric (LRS) Bianchi type-I cosmological model in f(R,T)f(R,T) gravity (RR is the Ricci scalar and TT is the trace of the stress energy tensor) with Bulk viscous fluid as matter content. The model is constructed for the linear form f(R,T)=R+2f(T)f(R,T)=R+2f(T). The exact solution of field equations is obtained by using a time varying deceleration parameter qq for a suitable choice of the function f(T)f(T). In this work, the bulk viscous pressure pˉ\bar{p} is found to be negative and energy density ρ\rho is found to be positive. The obtained model is anisotropic, accelerating and compatible with the results of astronomical observations. Also, some important features of physical parameters of this model have been discussed.

Keywords

Cite

@article{arxiv.1707.02873,
  title  = {LRS Bianchi type-I bulk viscous cosmological models in $f(R,T)$ gravity},
  author = {Parbati Sahoo and Raghavender Reddy},
  journal= {arXiv preprint arXiv:1707.02873},
  year   = {2018}
}

Comments

7 pages, 3 figure, This work accepted for publication in Astrophysics journal with issue 1 for 2018