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 . The transit redshift value is obtained where the transit model shows signature-flipping and is consistent with recent observations. In our models, the present values of EoS parameter crosses the cosmological constant value . Also, the present age of the universe is calculated.
Keywords
Cite
@article{arxiv.2005.11139,
title = {Transit cosmological models coupled with zero-mass scalar-field with high redshift in higher derivative theory},
author = {Archana Dixit and Dinesh Chandra Maurya and Anirudh Pradhan},
journal= {arXiv preprint arXiv:2005.11139},
year = {2021}
}
Comments
12 pages, 21 figures