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题名: On the dark sector interactions
作者: 蔡荣根 ;  Su, Qiping
刊名: PHYSICAL REVIEW D
出版日期: 2010
卷号: 81, 期号:10, 页码:-
关键词: ENERGY ;  QUINTESSENCE ;  COINCIDENCE ;  CONSTRAINTS ;  MODEL
学科分类: Physics
通讯作者: Cai, RG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China
部门归属: [Cai, RG; Su, QP] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
英文摘要: It is possible that there exist some interactions between dark energy (DE) and dark matter (DM), and a suitable interaction can alleviate the coincidence problem. Several phenomenological interacting forms are proposed and are fitted with observations in the literature. In this paper we investigate the possible interaction in a way independent of specific interacting forms by the use of observational data (supernovae, BAO, CMB, and Hubble parameter). We divide the whole range of redshift into a few bins and set the interacting term delta(z) to be a constant in each redshift bin. We consider four parametrizations of the equation of state w(de) for DE and find that delta(z) is likely to cross the noninteracting (delta = 0) and have an oscillation form. It suggests that to study the interaction between DE and DM, more general phenomenological forms of the interacting term should be considered.
资助者: National Natural Science Foundation of China[10535060, 10821504, 10975168]; National Basic Research Program of China[2010CB833004]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000278146700027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5106
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Cai, Rong-Gen,Su, Qiping. On the dark sector interactions[J]. PHYSICAL REVIEW D,2010,81(10):-.
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