Bouncing Cosmology in Extended Gravity and Its Reconstruction as Dark Energy Model

被引:20
作者
Agrawal, A. S. [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 Basicas, Dept Fis, Casilla 170, Antofagasta, Chile
[3] Indira Gandhi Inst Technol, Dept Phys, Dhenkanal 759146, Odisha, India
来源
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS | 2022年 / 70卷 / 01期
关键词
dark energy; extended gravity; matter bounce; perfect fluid; stability analysis; STATEFINDER; UNIVERSE;
D O I
10.1002/prop.202100065
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this paper, we have presented a bouncing cosmological model of the Universe in an extended theory of gravity. The dynamical behaviour of the model obtained from the flat FLRW space-time along with the violation of null energy condition have been shown. The geometrical parameters show singularity behaviour at the bouncing epoch. The parameters involved in the scale factor play a major role in the bouncing behaviour. In addition, the coupling parameter that resulted in the minimal matter-geometry coupling in the extended gravity has significant role to avoid the singularity of equation of state parameter at the bouncing epoch. Using a linear homogeneous perturbation calculation, we show the dynamical stability of the model.
引用
收藏
页数:10
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