高斯-庞内引力理论中的弹跳宇宙动力学

IF 0.7 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Astrophysics Pub Date : 2025-08-26 DOI:10.1007/s10511-025-09873-2

M. Vijaya Santhi, K. Santosh Rupa

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引用次数: 0

摘要

本文的主要目的是根据f (G)引力来调查和研究各向异性宇宙。在一种修正的引力理论中，Kantowski-Sachs时空被认为是这种进化的原因。利用可行的f (G)模型选择研究了修正理论场方程的精确解。我们考虑了由指数和幂律尺度因子描述的两种弹跳情景，这些非奇异弹跳模型也适用于过渡宇宙加速现象。对得到的模型进行了具体的重要宇宙学参数估计和讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Dynamics of Bouncing Universe in Gauss-Bonnet Theory of Gravity

This manuscript’s primary object is to investigate and study the anisotropic universe in terms of f (G) gravity. Kantowski-Sachs spacetime is considered for this evolution, in a modified theory of gravity. The exact solutions of modified theory field equations are investigated using a viable f (G) model choice. We considered two bouncing scenarios described by exponential and power law scale factors, these non-singular bouncing models also accommodate a transition cosmic acceleration phenomenon. Specific significant cosmological parameters are estimated and discussed for the obtained models.

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来源期刊

Astrophysics 地学天文-天文与天体物理

CiteScore

0.90

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Astrophysics (Ap) is a peer-reviewed scientific journal which publishes research in theoretical and observational astrophysics. Founded by V.A.Ambartsumian in 1965 Astrophysics is one of the international astronomy journals. The journal covers space astrophysics, stellar and galactic evolution, solar physics, stellar and planetary atmospheres, interstellar matter. Additional subjects include chemical composition and internal structure of stars, quasars and pulsars, developments in modern cosmology and radiative transfer.