Bianchi-I cosmology with generalised Chaplygin gas and periodic deceleration parameter

被引：2

作者：

Hulke, N. ^{[1
]}

Singh, G. P. ^{[2
]}

Bishi, Binaya K. ^{[3
,4
]}

机构：

[1] Shri Ramdeobaba Coll Engn & Management, Dept Appl Math, Nagpur, Maharashtra, India

[2] Visvesvaraya Natl Inst Technol, Dept Math, Nagpur 440010, Maharashtra, India

[3] Univ Zululand, Dept Math Sci, Private Bag X1001, ZA-3886 Kwa Dlangezwa, South Africa

[4] Lovely Profess Univ, Dept Math, Jalandhar 144401, Punjab, India

来源：

INDIAN JOURNAL OF PHYSICS | 2022年 / 96卷 / 13期

基金：

芬兰科学院; 新加坡国家研究基金会;

关键词：

Bianchi-I; Periodic deceleration parameter; Dark energy; Cosmological constant; PROBE WMAP OBSERVATIONS; ENERGY CONDITIONS; CONSTANT; MODEL;

D O I：

10.1007/s12648-022-02315-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the Bianchi-I cosmological model in presence of generalised Chaplygin gas, variable gravitational and cosmological constant. The exact solutions of Einstein field equations are obtained with time varying periodic deceleration parameter. The graphical representation method has been used to discuss the physical and dynamical behaviour of the model. Further, the stability and physical acceptability of the obtained solutions have been investigated. Most of the parameters show periodic behaviour in this study due to the presence of cosine function in the deceleration parameter. In all cases, pressure is negative, which leads us to late time expansion of the universe. The considered models are found to be stable.

引用

页码：4033 / 4049

页数：17

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