论文标题

$ f(t)$重力中的弹跳解决方案

Bouncing solutions in $f(T)$ gravity

论文作者

Skugoreva, Maria A., Toporensky, Alexey V.

论文摘要

我们考虑了$ f(t)$重力中空间弯曲的宇宙的宇宙学动力学的某些方面。本地分析使我们能够找到弹跳和静态解决方案的条件;这些条件通常比一般相对论的限制性不大。我们还通过构造相图,对相应的宇宙学动力学进行了全局分析。这些图表明,当弹跳可能发生时,大合同宇宙的命运不会发生重大改变,因为它们似乎是一个足够大的宇宙无法访问的。

We consider certain aspects of cosmological dynamics of a spatially curved Universe in $f(T)$ gravity. Local analysis allows us to find conditions for bounces and for static solutions; these conditions appear to be in general less restrictive than in general relativity. We also provide a global analysis of the corresponding cosmological dynamics in the cases when bounces and static configurations exist, by constructing phase diagrams. These diagrams indicate that the fate of a big contracting Universe is not altered significantly when bounces become possible, since they appear to be inaccessible by a sufficiently big Universe.

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