f(G, T) and its cosmological implications

被引:0
|
作者
Yousaf, Z. [1 ]
Bhatti, M. Z. [1 ]
Ganesan, T. [2 ]
Aman, H. [1 ]
机构
[1] Univ Punjab, Dept Math, Quaid i Azam Campus, Lahore 54590, Pakistan
[2] Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada
关键词
f(G; T) gravity; acceleration; equation of state; ENERGY CONDITIONS; STRUCTURE SCALARS; COMPACT STARS; DYNAMICS; FLUIDS;
D O I
10.1139/cjp-2023-0200
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A coupled formulation of the Gauss-Bonnet invariant term G and the energy-momentum trace T term, which provide a modified f(G, T) gravity, has been analyzed in this study. The functional form for the f(G, T) gravity has been taken as f(G, T) = alpha T + beta Gn, where alpha and beta are free parameters. The field equations are produced in general, which then used a dust case to extract a novel Hubble parameter. The stability of the assumed model and explanation for the late-time acceleration have been studied by the energy bound. Furthermore, the dynamical variables are used to analyze the behavior of the equation of state parameter by restricting different parameters with respect to the recent observational data. A quintessence-like evolution has been achieved as a result of this study.
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页码:221 / 230
页数:10
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