论文标题
可行的非最小弹跳的稳定性
Stability of a viable non-minimal bounce
论文作者
论文摘要
构建可行的早期宇宙弹跳模型的主要困难是：绕过观察和理论\ emph {no-go}定理，以构建一个稳定的非单向弹跳阶段，也许主要关注的是，它的主要关注点是构建可以很好地避免BKL不稳定性的稳定吸引者解决方案。在本文中，在同质和各向同性的背景中，我们在存在附加的正压流体的情况下广泛研究了最近宣布的最近宣布的可行的非最小弹跳理论的稳定性分析，并表明，弹跳溶液保持稳定并可以逃避BKL BKL的不稳定性，以实现广泛的模型参数。我们提供的表达方式可以解释所需固定点附近的宇宙行为，即弹跳解决方案并将我们的结果与最小理论进行比较，并表明在任何情况下，ekpyrosis都是最稳定的解决方案。
The main difficulties in constructing a viable early Universe bouncing model are: to bypass the observational and theoretical \emph{no-go} theorem, to construct a stable non-singular bouncing phase and perhaps, the major concern of it is to construct a stable attractor solution which can evade the BKL instability as well. In this article, in the homogeneous and isotropic background, we extensively study the stability analysis of the recently announced viable non-minimal bouncing theory in the presence of an additional barotropic fluid and show that, the bouncing solution remains stable and can evade BKL instability for a wide range of the model parameter. We provide the expressions that explain the behavior of the Universe in the vicinity of the required fixed point i.e., the bouncing solution and compare our results with the minimal theory and show that ekpyrosis is the most stable solution in any scenario.
