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Scalar perturbation and stability of Ricci dark energy

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Sep 2009Embargo end date: 01 Apr 2009 English Publisher:Elsevier BVJournal:Physics Letters B, volume 680, pages 184-187 (issn: 0370-2693, Copyright policy )
Authors: Feng, Chao-Jun; Li, Xin-Zhou;

doi: 10.1016/j.physletb.2009.08.042 , 10.48550/arxiv.0904.2972

arXiv: 0904.2972

Scalar perturbation and stability of Ricci dark energy

Abstract

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.

6 pages, 10 figures

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Keywords

High Energy Physics - Theory, Nuclear and High Energy Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), High Energy Physics - Theory (hep-th), FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 15
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
15
Average
Top 10%
Top 10%
Green
gold