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Couplings between holographic dark energy and dark matter
Ma, Yin-Zhe1,2; Gong, Yan3,4; Chen, Xuelei1,3
2010-10-01
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号69期号:3-4页码:509-519
摘要We consider the interaction between dark matter and dark energy in the framework of holographic dark energy, and propose a natural and physically plausible form of interaction, in which the interacting term is proportional to the product of the powers of the dark matter and dark energy densities. We investigate the cosmic evolution in such models. The impact of the coupling on the dark matter and dark energy components may be asymmetric. While the dark energy decouples from the dark matter at late time, just as other components of the cosmic fluid become decoupled as the universe expands, interestingly, the dark matter may actually become coupled to the dark energy at late time. We shall call such a phenomenon incoupling. We use the latest type Ia supernovae data from the SCP team, baryon acoustics oscillation data from SDSS and 2dF surveys, and the position of the first peak of the CMB angular power spectrum to constrain the model. We find that the interaction term which is proportional to the first power product of the dark energy and dark matter densities gives an excellent fit to the current data.
DOI10.1140/epjc/s10052-010-1408-1
收录类别SCI
语种英语
WOS记录号WOS:000283361800014
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8077
专题星系宇宙学研究部
作者单位1.Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100080, Peoples R China
2.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
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Ma, Yin-Zhe,Gong, Yan,Chen, Xuelei. Couplings between holographic dark energy and dark matter[J]. EUROPEAN PHYSICAL JOURNAL C,2010,69(3-4):509-519.
APA Ma, Yin-Zhe,Gong, Yan,&Chen, Xuelei.(2010).Couplings between holographic dark energy and dark matter.EUROPEAN PHYSICAL JOURNAL C,69(3-4),509-519.
MLA Ma, Yin-Zhe,et al."Couplings between holographic dark energy and dark matter".EUROPEAN PHYSICAL JOURNAL C 69.3-4(2010):509-519.
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