Strange quark matter cosmological models attached to string cloud in f(R) theory of gravity

被引：15
作者：
Vijaya Santhi, M. [1 ]
Chinnappalanaidu, T. [1 ]
机构：
[1] Andhra Univ, Dept Appl Math, Visakhapatnam 530003, Andhra Pradesh, India
来源：
INDIAN JOURNAL OF PHYSICS | 2022年 / 96卷 / 03期
基金：
英国科研创新办公室;
关键词：
Kantowski-Sachs space-time; Strange quark matter; Cosmic strings; f(R) gravity; Hybrid scale factor; Deceleration parameter; SYMMETRIC SPACE-TIME; EXTENDED THEORIES; GEOMETRY; EXPANSION; STARS;
D O I：
10.1007/s12648-020-01983-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, we have examined the Kantowski-Sachs space-time in the presence of strange quark matter with the appearance and non-appearance of strings in f(R) gravity. Here, R is the Ricci scalar of the space-time. Exact solutions of the field equations are obtained by considering the following conditions (i) hybrid scale factor, (ii) the proportionality of shear scalar (sigma) with expansion scalar (theta) and (iii) power-law between the scalar-on function F(R) and average scale factor a(t). We have investigated some physical and geometrical properties of the models, and their behavior is thoroughly studied with the help of graphical representation.
引用
收藏
页码：953 / 962
页数：10
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