Mixed fluid cosmological model in f(R, T) gravity

被引:4
|
作者
Sahoo, Parbati [1 ]
Taori, Barkha [2 ]
Mahanta, K. L. [3 ]
机构
[1] Vellore Inst Technol, SAS, Dept Math, Chennai Campus, Chennai 600127, Tamil Nadu, India
[2] Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India
[3] CV Raman Coll Engn, Dept Math, Bhubaneswar 752054, India
关键词
f(R; T); gravity; mixed fluid; time varying deceleration parameter; Bianchi type-I space-time; s-r parameter; DARK ENERGY-MODEL; PROBE WMAP OBSERVATIONS; UNIVERSE; DECELERATION; ANISOTROPY; CONSTANT; CONSTRAINTS; SUPERNOVAE; RESOLUTION; RELEASE;
D O I
10.1139/cjp-2019-0494
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We construct a locally rotationally symmetric (LRS) Bianchi type-I cosmological model inf(R, T) theory of gravity when the source of gravitation is a mixture of barotropic fluid and dark energy (DE) by employing a time-varying deceleration parameter. We observe through the behavior of the state finder parameters (r, s) that our model begins from the Einstein static era and goes to ACDM era. The equation of state (EOS) parameter (omega(d)) for DE varies from the phantom (omega < -1) phase to quintessence (omega > -1) phase, which is consistent with observational results. It is found that the discussed model can reproduce the current accelerating phase of the expansion of the universe.
引用
收藏
页码:1015 / 1022
页数:8
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