The Fate of the Universe Evolution in the Quadratic Form of Ricci-Gauss-Bonnet Cosmology

被引：5

作者：

Lohakare, Santosh, V ^{[1
]}

Tello-Ortiz, Francisco ^{[2
]}

Mishra, B. ^{[1
]}

Tripathy, S. K. ^{[3
]}

机构：

[1] Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India

[2] Univ Antofagasta, Fac Ciencias Bas, Dept Fis, Casilla 170, Antofagasta, Chile

[3] Indira Gandhi Inst Technol, Dept Phys, Sarang 759146, Odisha, India

来源：

GRAVITATION & COSMOLOGY | 2023年 / 29卷 / 04期

关键词：

F R; BOUNCING COSMOLOGY; HUBBLE CONSTANT; DARK ENERGY; SUPERNOVAE; INFLATION; GRAVITY;

D O I：

10.1134/S0202289323040138

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the possibility of a future singularity due to accelerating expansion of the Universe in a gravitational theory that comprises the Ricci scalar R and the Gauss-Bonnet invariant G, known as F(R, G) gravity, which can be viewed in the quadratic form. Three models are presented using Hubble parameters to represent a finite and infinite future. The model parameters are analyzed on the basis of their physical and geometrical properties. This study also explores the properties of the modified gravitational theory, and neither a future singularity nor a little or pseudo-rip are posed as threats to the fate of the Universe. We present scalar perturbation approaches to perturbed evolution equations and demonstrate their stability.

引用

页码：443 / 455

页数：13

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