Transitioning universe with hybrid scalar field in Bianchi I space-time

被引：34

作者：

Yadav, Anil Kumar ^{[1
]}

Alshehri, A. M. ^{[2
]}

Ahmad, Nafis ^{[2
]}

Goswami, G. K. ^{[3
]}

Kumar, Mukesh ^{[4
]}

机构：

[1] United Coll Engn & Res, Dept Phys, Greater Noida 201310, India

[2] King Khalid Univ, Dept Phys, Coll Sci, POB 9004, Abha 61413, Saudi Arabia

[3] Netaji Subhas Univ Technol, Dept Math, Delhi, India

[4] GLA Univ, Dept Math, Mathura 281406, India

来源：

PHYSICS OF THE DARK UNIVERSE | 2021年 / 31卷

关键词：

Brans-Dicke gravity; Scalar field; Cosmological parameters; Dark energy; Bianchi I space-time;

D O I：

10.1016/j.dark.2020.100738

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper we investigate a Bianchi type I transitioning Universe in Brans-Dicke theory. To get an explicit solution of the field equations, we assume scalar field as phi = phi(0) [t(alpha)exp(beta t)](delta) with phi(0), alpha, beta and d as constants. The values of alpha and beta are obtained by probing the proposed model with recent observational Hubble data (OHD) points. The interacting and non-interacting scenarios between dark matter and dark energy of the derived Universe within the framework of Brans-Dicke gravity are investigated. The om(z) analysis of the Universe in derived model shows that the Universe is filled with dynamical dark energy with its equation of state parameter omega(de) > -1. Hence the Universe behaves like a quintessence model at present epoch. Some physical properties of the Universe are also discussed. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：9

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