English

Existence of bulk viscous universe in $f(R,T)$ gravity and confrontation with observational data

General Physics 2020-03-03 v2

Abstract

In this paper we have investigated a bulk viscous universe in f(R,T)f(R,T) gravity where RR and TT are the Ricci scalar and trace of energy momentum tensor respectively. We have obtained explicit solutions of field equations in modified gravity by considering the power law form of scale factor. The Hubble parameter and deceleration parameter are derived in terms of cosmic time and redshift both. We have estimated the present values of these parameters with observational Hubble data and SN Ia data sets. At 1σ\sigma level, the estimated values of q0q_{0} and mm are obtained as q0=0.30±0.05q_{0}=-0.30 \pm 0.05 \& m=0.70±0.02 m = 0.70 \pm 0.02 where q0q_{0} is the present value of deceleration parameter and mm is the model parameter. The energy conditions and Om(z) analysis for the anisotropic LRS Bianchi type I model are also discussed.

Keywords

Cite

@article{arxiv.2002.12763,
  title  = {Existence of bulk viscous universe in $f(R,T)$ gravity and confrontation with observational data},
  author = {Anil Kumar Yadav and Lokesh Kumar Sharma and B. K. Singh and P. K. Sahoo},
  journal= {arXiv preprint arXiv:2002.12763},
  year   = {2020}
}

Comments

Published version in New Astronomy