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Statefinder parameters for coupled quintessence scenario in a power law case
Zhang X(张鑫); Zhang, X
2005
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
卷号44期号:3页码:573-576
通讯作者Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
摘要We investigate a coupled quintessence scenario, which can provide a natural solution to the cosmic coincidence problem. We assume that the mass of dark matter particles depends on a power law function of the scalar held associated to dark energy and meanwhile the scalar field evolves in a power law potential. Since the dynamics of this system is dominated by an attractor solution, the mass of dark matter particles is forced to change with time as to ensure that the ratio between the energy densities of dark matter and dark energy becomes a constant at late times, and one thus solves the cosmic coincidence problem naturally. We then apply a statefinder diagnostic to this coupled quintessence scenario. It is shown that the evolving trajectory of this scenario in the s-r diagram is quite different from those of other dark energy models.
文章类型Article
关键词coupled quintessence scenario power-law case attractor solution statefinder diagnostic
学科领域Physics
研究领域[WOS]Physics
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语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000232093900037
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237998
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Zhang X,Zhang, X. Statefinder parameters for coupled quintessence scenario in a power law case[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2005,44(3):573-576.
APA 张鑫,&Zhang, X.(2005).Statefinder parameters for coupled quintessence scenario in a power law case.COMMUNICATIONS IN THEORETICAL PHYSICS,44(3),573-576.
MLA 张鑫,et al."Statefinder parameters for coupled quintessence scenario in a power law case".COMMUNICATIONS IN THEORETICAL PHYSICS 44.3(2005):573-576.
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