LRS Bianchi type-I cosmological model with constant deceleration parameter in $f(R,T)$ gravity

A spatially homogeneous anisotropic LRS Bianchi type-I cosmological model is studied in $f(R,T)$ gravity with a special form of Hubble's parameter, which leads to constant deceleration parameter. The parameters involved in the considered form of Hubble parameter can be tuned to match, our models with the $\Lambda $CDM model. With the present observed value of the deceleration parameter, we have discussed physical and kinematical properties of a specific model. Moreover, we have discussed the cosmological distances for our model.

Binaya K. Bishi, S.K.J. Pacif, P.K. Sahoo, G.P. Singh · 2017