Revisit of the interaction between holographic dark energy and dark matter

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	Revisit of the interaction between holographic dark energy and dark matter
	Li, M
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2012
期号	6 页码:9
关键词	PROBE WMAP OBSERVATIONS BARYON ACOUSTIC-OSCILLATIONS HUBBLE-SPACE-TELESCOPE BRANS-DICKE THEORY DIGITAL SKY SURVEY COSMOLOGICAL CONSTANT BLACK-HOLES ACCELERATING UNIVERSE DATA RELEASE MODEL
ISSN号	1475-7516
通讯作者	Zhang, ZH (reprint author), Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
英文摘要	In 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.
学科主题	Physics
收录类别	SCI
资助信息	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]
原文出处	http://dx.doi.org/10.1088/1475-7516/2012/06/009
语种	英语
WOS记录号	WOS:000306003500009
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15085]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Li, M. Revisit of the interaction between holographic dark energy and dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(6):9.
APA	Li, M.(2012).Revisit of the interaction between holographic dark energy and dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(6),9.
MLA	Li, M."Revisit of the interaction between holographic dark energy and dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .6(2012):9.