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Zhang, ZH; Li, S; Li, XD; Zhang, X; Li, M; Zhang, ZH (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
Revisit of the interaction between holographic dark energy and dark matter
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Language英语
KeywordProbe Wmap Observations Baryon Acoustic-oscillations Hubble-space-telescope Brans-dicke Theory Digital Sky Survey Cosmological Constant Black-holes Accelerating Universe Data Release Model
AbstractIn this paper we investigate the possible direct, non-gravitational interaction between holographic dark energy (HDE) and dark matter. Firstly, we start with two simple models with the interaction terms Q proportional to rho(dm) and Q proportional to rho(de), and then we move on to the general form Q proportional to rho(alpha)(m)rho(beta)(de). The cosmological constraints of the models are obtained from the joint analysis of the present Union 2.1+BAO+CMB+H-0 data. We find that the data slightly favor an energy flow from dark matter to dark energy, although the original HDE model still lies in the 95.4% confidence level (CL) region. For all models we find c < 1 at the 95.4% CL. We show that compared with the cosmic expansion, the effect of interaction on the evolution of rho(dm) and rho(de) is smaller, and the relative increment (decrement) amount of the energy in the dark matter component is constrained to be less than 9% (15%) at the 95.4% CL. By introducing the interaction, we find that even when c < 1 the big rip still can be avoided due to the existence of a de Sitter solution at z -> -1. We show that this solution cannot be accomplished in the two simple models, while for the general model such a solution can be achieved with a large beta, and the big rip may be avoided at the 95.4% CL.
2012
ISSN1475-7516
Issue6Pages:9
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNSFC [10535060, 10975172, 10821504, 10705041, 10975032, 11175042]; National Ministry of Education of China [NCET-09-0276, N100505001]; 973 program of the Ministry of Science and Technology of China [2007CB815401] ; NSFC [10535060, 10975172, 10821504, 10705041, 10975032, 11175042]; National Ministry of Education of China [NCET-09-0276, N100505001]; 973 program of the Ministry of Science and Technology of China [2007CB815401] ; NSFC [10535060, 10975172, 10821504, 10705041, 10975032, 11175042]; National Ministry of Education of China [NCET-09-0276, N100505001]; 973 program of the Ministry of Science and Technology of China [2007CB815401] ; NSFC [10535060, 10975172, 10821504, 10705041, 10975032, 11175042]; National Ministry of Education of China [NCET-09-0276, N100505001]; 973 program of the Ministry of Science and Technology of China [2007CB815401]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15085
Collection理论物理所科研产出_SCI论文
Corresponding AuthorZhang, ZH (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, ZH,Li, S,Li, XD,et al. Revisit of the interaction between holographic dark energy and dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(6):9.
APA Zhang, ZH,Li, S,Li, XD,Zhang, X,Li, M,&Zhang, ZH .(2012).Revisit of the interaction between holographic dark energy and dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(6),9.
MLA Zhang, ZH,et al."Revisit of the interaction between holographic dark energy and dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .6(2012):9.
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