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arXiv 1504.05178gr-qcastro-ph.COhep-th
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宇宙学全息的加速膨胀

Accelerated expansion from cosmological holography

Maurice H. P. M. van Putten

摘要:

研究表明,全息宇宙学意味着在存在缩放到闭合密度$3H^2/8πG$的无维物质密度$Ω_m$的情况下,哈勃半径$c^{-1}\dot{R}_H = -1 + 3Ω_m$会不断演化,其中$c$表示光速,$H$和$G$表示哈勃参数和牛顿常数。它揭示了一种动态的暗能量,以及在哈勃加速的尺度上对物质的引力增加了六倍。它再现了过渡红移$z_t\simeq 0.4$到目前的加速膨胀时代,是一致的减速参数$q(z)=q_0+(dq/dz)_0z$在Ia型超新星的$(q_0,(dq/dz)_0)$。

英文摘要:

It is shown that holographic cosmology implies an evolving Hubble radius $c^{-1}\dot{R}_H = -1 + 3Ω_m$ in the presence of a dimensionless matter density $Ω_m$ scaled to the closure density $3H^2/8πG$, where $c$ denotes the velocity of light and $H$ and $G$ denote the Hubble parameter and Newton's constant. It reveals a dynamical dark energy and a sixfold increase in gravitational attraction to matter on the scale of the Hubble acceleration. It reproduces the transition redshift $z_t\simeq 0.4$ to the present epoch of accelerated expansion and is consistent with $(q_0,(dq/dz)_0)$ of the deceleration parameter $q(z)=q_0+(dq/dz)_0z$ observed in Type Ia supernovae.

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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