Scalar Perturbation and Stability of Ricci Dark Energy

Details Scalar Perturbation and Stability of Ricci Dark Energy Scalar Perturbation and Stability of Ricci Dark Energy

2009-04-20

arxiv.org/abs/0904.2972v1

Phys.Lett.B680:184-187,2009

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 10 figures

Scientific paper

10.1016/j.physletb.2009.08.042

The Ricci dark energy (RDE) proposed to explain the accelerating expansion of the universe requires its parameter $\alpha < 1$, 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 $\alpha> 1/3$, which gives a lower bound for $\alpha$ theoretically.

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