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arXiv 0904.2972hep-thastro-ph.COgr-qc
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Ricci暗能量的标量微扰与稳定性

Scalar Perturbation and Stability of Ricci Dark Energy

Chao-Jun Feng, Xin-Zhou Li

摘要:

为了解释宇宙加速膨胀而提出的里奇暗能量(RDE)需要它的参数$α< 1$,该参数的值将决定RDE的行为。本文研究了宇宙中有无物质时RDE的标量微扰,发现在这两种情况下,当$α> 1/3$满足时,微扰都是稳定的,从而从理论上给出了$α$的一个下界.

英文摘要:

The Ricci dark energy (RDE) proposed to explain the accelerating expansion of the universe requires its parameter $α< 1$, whose value will determine the behavior of RDE. In this Letter, we study the scalar perturbation of RDE with and without matter in the universe, and we find that in both cases, the perturbation is stable if $α> 1/3$, which gives a lower bound for $α$ theoretically.

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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