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arXiv 2101.06347gr-qcastro-ph.COhep-th
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远平行引力宇宙学的动力学复杂性

Dynamical complexity of the Teleparallel gravity cosmology

Geovanny A. Rave-Franco, Celia Escamilla-Rivera, Jackson Levi Said

摘要:

从动力学系统的角度对遥平行引力进行了探索,以便对目前观察到的宇宙学演化进行测试。到目前为止,所提出的自治系统一直限制在一个恒定的动态变量,其中包含的信息有关的动态$H_0$值。因此,在本文中,我们考虑一个泛化的动力系统,通过施加一个非恒定的自由度,使我们能够重写一个通用的自主动力学分析。我们描述的治疗我们的非线性自治系统通过研究双曲临界点,并讨论了一个有趣的现象学功能方面$H_0$:可能性,以获得一个最佳的拟合值为这个参数在宇宙学上可行的$f(T,B)$模型,混合幂律。这一结果使我们能够提出一个通用的方案,其中有可能固定的约束,以解决$H_0$张力在后期的线性化解决方案被认为是。

英文摘要:

The exploration of teleparallel gravity has been done from a dynamical systems point of view in order to be tested against the cosmological evolution currently observed. So far, the proposed autonomous systems have been restrictive over a constant dynamical variable, which contains information related to the dynamics on the $H_0$ value. It is therefore that in this paper we consider a generalization of the dynamical system by imposing a nonconstant degree of freedom over it which allows us to rewrite a generic autonomous dynamical analysis. We describe the treatment of our nonlinear autonomous system by studying the hyperbolic critical points and discuss an interesting phenomenological feature in regards to $H_0$: the possibility to obtain a best-fit value for this parameter in a cosmologically viable $f(T,B)$ model, a mixed power law. This result allows us to present a generic scenario in which it is possible to fix constraints to solve the $H_0$ tension at late times where its linearized solutions are considered.

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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