弹跳宇宙模型的功能形式$\boldsymbol{F(R)}$重力

IF 1.2 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Gravitation and Cosmology Pub Date : 2023-09-04 DOI:10.1134/S0202289323030027

A. S. Agrawal, S. Mishra, S. K. Tripathy, B. Mishra

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引用次数: 1

摘要

利用$F(R)$重力理论研究了各向同性均匀时空中的弹跳宇宙学模型。研究了$F(R)$的两种函数形式，并引入了弹跳尺度因子。推导并分析了动力学参数和宇宙学参数。在这两种弹跳模型中，都显示了对强能量条件的破坏。我们证明，这两种模型都表现出相对于宇宙时间的稳定行为。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

$Bouncing Cosmological Models in a Functional form of $\boldsymbol{F(R)}$ Gravity$

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Bouncing Cosmological Models in a Functional form of $\boldsymbol{F(R)}$ Gravity

We investigate some bouncing cosmological models in an isotropic and homogeneous space-time with in $F(R)$ theory of gravity. Two functional forms of $F(R)$ have are studied with a bouncing scale factor. The dynamical parameters are derived and analyzed along with cosmographic parameters. A violation of sthe trong energy conditions in both bouncing models is also shown. We show that both models exhibit stable behavior with respect to cosmic time.

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来源期刊

Gravitation and Cosmology ASTRONOMY & ASTROPHYSICS-

CiteScore

1.70

自引率

22.20%

发文量

审稿时长

>12 weeks

期刊介绍： Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoplesâ€™ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community

弹跳宇宙模型的功能形式\(\boldsymbol{F(R)}\)重力

摘要