论文标题
五五重峰宇宙学模型的动力描述非最小程度地与重力相结合
Dynamical description of a quintom cosmological model nonminimally coupled with gravity
论文作者
论文摘要
在这项工作中，我们研究了一个基于非最低限值与重力的五重摩托暗能量模型的宇宙学模型，并具有指数平方类型的特定势能。对于这种特定类型的势能和非最小耦合，分析了动力学特性，并讨论了相应的宇宙学效应。考虑到线性稳定方法，我们研究了相空间结构的动力学特性，确定了物理上可接受的溶液。分析表明，在此模型中，我们可以具有各种宇宙学时代，与辐射，物质统治和DE Sitter时代相对应。从物理和宇宙学的角度研究了每个解决方案，从而获得了模型参数的可能约束。原则上，当前的宇宙学设置代表了可能的可行标量张量理论，该理论可以解释与状态的暗能量方程和宇宙在大尺度上的演变相关的各种过渡效应。
In this work we have studied a cosmological model based on a quintom dark energy model non-minimally coupled with gravity, endowed with a specfic potential energy of the exponential squared type. For this specific type of potential energy and non-minimal coupling, the dynamical properties are analyzed and the corresponding cosmological effects are discussed. Considering the linear stability method, we have investigated the dynamical properties of the phase space structure, determining the physically acceptable solutions. The analysis showed that in this model we can have various cosmological epochs, corresponding to radiation, matter domination, and de Sitter eras. Each solution is investigated from a physical and cosmological point of view, obtaining possible constraints of the model's parameters. In principle the present cosmological setup represent a possible viable scalar tensor theory which can explain various transitional effects related to the behavior of the dark energy equation of state and the evolution of the Universe at large scales.
