标题： 暗物质塌缩晕轮中的暗能量动力学 显示英文标题

标题： Dynamics of dark energy in collapsing halo of dark matter

摘要： 我们研究了暗物质和暗能量在膨胀宇宙中的球对称密度和速度扰动的非线性演化。为此，我们利用守恒方程和爱因斯坦方程来描述从早期宇宙的线性阶段到当前时期的非线性阶段，引力耦合的暗物质、暗能量和辐射不均匀性的演化。提出了一种用于数值积分描述晕中心部分演化的非线性微分方程组的简单方法。结果展示了星团晕（$k=2$Mpc$^{-1}$）和超星团尺度（$k=0.2$Mpc$^{-1}$）上的情况，并表明具有小的有效声速（$c_s<0.1$）的本质场暗能量会对膨胀宇宙中的大尺度结构形成产生显著影响。 显示英文摘要

摘要： We investigate the non-linear evolution of spherical density and velocity perturbations of dark matter and dark energy in the expanding Universe. For that we have used the conservation and Einstein equations to describe the evolution of gravitationally coupled inhomogeneities of dark matter, dark energy and radiation from linear stage in the early Universe to the non-linear one at the current epoch. The simple method of the numerical integration of the system of non-linear differential equations for evolution of the central part of halo is proposed. The results are presented for halo of cluster ($k=2$ Mpc$^{-1}$) and supercluster scales ($k=0.2$ Mpc$^{-1}$) and show that quintessential scalar field dark energy with small value of effective speed of sound $c_s<0.1$ can give noticeable impact on the formation of large scale structures in the expanding Universe.