标题： 动力学k本质幽灵暗能量模型 显示英文标题

标题： Kinetic k-essence ghost dark energy model

摘要： 一个鬼暗能量模型最近被提出以解释当前宇宙的加速膨胀。 在这个模型中，来自量子色动力学（QCD）文采诺鬼魂的鬼暗能量的能量密度与哈勃参数成正比，记为$\rho_D=\alpha H$。 这里$\alpha$是一个数量级为$\Lambda^3_{QCD}$的常数，其中$\Lambda_{QCD}\sim 100 MeV$是 QCD 质量尺度。 我们考虑了鬼暗能量与暗物质组分之间有无相互作用以及动能k-本质场之间的联系。 结果显示，鬼暗能量主导的宇宙的宇宙学演化可以完全由一个动能k-本质标量场描述。 根据鬼暗能量密度的演化，我们在平坦的弗里德曼-罗伯逊-沃克宇宙中重构了动能k-本质函数$F(X)$。 显示英文摘要

摘要： A ghost dark energy model has been recently put forward to explain the current accelerated expansion of the Universe. In this model, the energy density of ghost dark energy, which comes from the Veneziano ghost of QCD, is proportional to the Hubble parameter, $\rho_D=\alpha H$. Here $\alpha$ is a constant of order $\Lambda^3_{QCD}$ where $\Lambda_{QCD}\sim 100 MeV$ is the QCD mass scale. We consider a connection between ghost dark energy with/without interaction between the components of the dark sector and the kinetic k-essence field. It is shown that the cosmological evolution of the ghost dark energy dominated Universe can be completely described a kinetic k-essence scalar field. We reconstruct the kinetic k-essence function $F(X)$ in a flat Friedmann-Robertson-Walker Universe according to the evolution of ghost dark energy density.