arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2202.08150gr-qchep-th
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加速f(T)引力模型的动力稳定性分析

Dynamical Stability Analysis of Accelerating f(T) Gravity Models

L. K. Duchaniya, Santosh V Lohakare, B. Mishra, S. K. Tripathy

摘要:

本文着重分析了在$f(T)$引力理论中得到的加速宇宙学模型的稳定性。基于状态方程参数演化的模型的行为在当前时期表现出类似幻影的行为。利用标量扰动技术建立了扰动演化方程,并证明了模型的稳定性。此外,我们还对这两种模型进行了动力系统分析。在两个具体的$f(T)$重力模型中,每个模型都得到了三个临界点。在每个模型中,至少有一个临界点被观察到是稳定的。

英文摘要:

In this paper, we have emphasized the stability analysis of the accelerating cosmological models obtained in $f(T)$ gravity theory. The behavior of the models based on the evolution of the equation of state parameter shows phantom-like behavior at the present epoch. The scalar perturbation technique is used to create the perturbed evolution equations, and the stability of the models has been demonstrated. Also, we have performed the dynamical system analysis for both the models. In the two specific $f(T)$ gravity models, three critical points are obtained in each model. In each model, at least one critical point has been observed to be stable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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