Cosmological evolutionary model for time-varying deceleration parameter in f(R, T) gravity

被引：2

作者：

Tiwari, R. K. ^{[1
]}

Esmaeili, Fakhereh M. D. ^{[2
]}

机构：

[1] Govt Model Sci Coll, Dept Math, Rewa, Madhya Pradesh, India

[2] Univ Hyderabad, Dept Phys, Hyderabad, India

来源：

INDIAN JOURNAL OF PHYSICS | 2022年 / 96卷 / 07期

关键词：

Modified Gravity; f(R; T) Theory; Variable deceleration parameter; Akarsu Conditions; PROBE WMAP OBSERVATIONS; DARK ENERGY; UNIVERSE; CONSTANT; REDSHIFT;

D O I：

10.1007/s12648-021-02213-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this research, we studied a time-varying deceleration parameter in the context of the f(R, T) theory of gravity. The exact solution of the field equations is obtained by a time-variable deceleration parameter in the order of nth which is covered by Berman's law :q as a constant. For n = 1 covers cosmological models with linearly varying deceleration parameter which are given by Akarsu and Dereli. Here, the behaviour of the cosmological model for n = 2 is going to be extended and the physical, geometrical and dynamical properties of the model discussed.

引用

页码：2205 / 2210

页数：6

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