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arXiv 1206.0179gr-qcastro-ph.COhep-th
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全息暗能量与暗物质线性相互作用

Holographic dark energy linearly interacting with dark matter

Luis P. Chimento, Mónica I. Forte, Martín G. Richarte

摘要:

研究了一个空间平坦的Friedmann-Robertson-Walker(FRW)宇宙学模型,该模型中冷暗物质通过与暗物质和暗能量的能量密度、总能量密度及其导数成线性关系的一般相互作用项与修正的全息Ricci暗能量耦合.利用Hubble数据的$χ^2$函数统计方法,得到了$H_0=73.6$ km/sMpc,渐近状态方程的$ω_s=-0.842$和$ z_{acc}= 0.89 $ . $Ω_{c0}$的估计值,满足目前的观测范围对应于$0.25R < \ro_x < 0.27R$的范围内变化的暗能量密度。

英文摘要:

We investigate a spatially flat Friedmann-Robertson-Walker (FRW) cosmological model with cold dark matter coupled to a modified holographic Ricci dark energy through a general interaction term linear in the energy densities of dark matter and dark energy, the total energy density and its derivative. Using the statistical method of $χ^2$-function for the Hubble data, we obtain $H_0=73.6$km/sMpc, $ω_s=-0.842$ for the asymptotic equation of state and $ z_{acc}= 0.89 $. The estimated values of $Ω_{c0}$ which fulfill the current observational bounds corresponds to a dark energy density varying in the range $0.25R < \ro_x < 0.27R$.

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。

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