In this paper, we have presented a model of the FLRW universe filled with matter and dark energy fluids, by assuming an ansatz that deceleration parameter is a linear function of the Hubble constant. This results in a time-dependent DP having decelerating-accelerating transition phase of the universe. This is a quintessence model ω(de)≥−1. The quintessence phase remains for the period (0≤z≤0.5806). The model is shown to satisfy current observational constraints. Various cosmological parameters relating to the history of the universe have been investigated.
@article{arxiv.1905.10801,
title = {A Dark Energy Quintessence Model of the Universe},
author = {Gopi Kant Goswami and Anirudh Pradhan and Aroonkumar Beesham},
journal= {arXiv preprint arXiv:1905.10801},
year = {2021}
}