Transit cosmological models coupled with zero-mass scalar-field with high redshift in higher derivative theory

Abstract

The present study deals with a flat FRW cosmological model filled with perfect fluid coupled with the zero-mass scalar field in the higher derivative theory of gravity. We have obtained two types of universe models, the first one is the accelerating universe (power-law cosmology) and the second one is the transit phase model (hyperbolic expansion-law). We have obtained various physical and kinematic parameters and discussed them with observationally constrained values of $H_0$. The transit redshift value is obtained $z_t=0.414$ where the transit model shows signature-flipping and is consistent with recent observations. In our models, the present values of EoS parameter ${\omega }_0$ crosses the cosmological constant value ${\omega }_0=-1$. Also, the present age of the universe is calculated.

12 pages, 21 figures

References in corpus (1)

• Brans-Dicke Scalar Field Cosmological Model in Lyra's Geometry

Cited by in corpus (1)

• Constrained transit cosmological models in $f(R,L_m,T)$-gravity