$f(T)$理论的动力学行为
The dynamical behavior of $f(T)$ theory
摘要：
最近，人们提出了一个新的模型，即$f(T)$理论，它是从广义平行引力理论出发，在不考虑暗能量的情况下，对当前宇宙加速膨胀的一种解释。本文分析了该理论的动力学性质。对于一个具体的幂律模型，我们得到了动力系统有一个稳定的de Sitter相，以及一个不稳定的辐射主导相和一个不稳定的物质主导相。我们证明了宇宙可以从辐射主导时代演化到物质主导时代，并最终进入指数膨胀阶段。
英文摘要：
Recently, a new model obtained from generalizing teleparallel gravity, named $f(T)$ theory, is proposed to explain the present cosmic accelerating expansion with no need of dark energy. In this paper, we analyze the dynamical property of this theory. For a concrete power law model, we obtain that the dynamical system has a stable de Sitter phase along with an unstable radiation dominated phase and an unstable matter dominated one. We show that the Universe can evolve from a radiation dominated era to a matter dominated one, and finally enter an exponential expansion phase.
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。
