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Cai, Rong-Gen ; Su, Qiping; Cai, RG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China
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| On the dark sector interactions | |
| Source Publication | PHYSICAL REVIEW D
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| Keyword | Energy Quintessence Coincidence Constraints Model |
| Abstract | 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. |
| 2010 | |
| ISSN | 1550-7998 |
| Volume | 81Issue:10Pages:- |
| Subject Area | Physics |
| Indexed By | SCI |
| Funding Organization | National Natural Science Foundation of China[10535060, 10821504, 10975168]; National Basic Research Program of China[2010CB833004] ; National Natural Science Foundation of China[10535060, 10821504, 10975168]; National Basic Research Program of China[2010CB833004] ; National Natural Science Foundation of China[10535060, 10821504, 10975168]; National Basic Research Program of China[2010CB833004] ; National Natural Science Foundation of China[10535060, 10821504, 10975168]; National Basic Research Program of China[2010CB833004] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/5106 |
| Collection | 理论物理所科研产出_SCI论文 |
| Corresponding Author | Cai, RG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Cai, Rong-Gen,Su, Qiping,Cai, RG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China. On the dark sector interactions[J]. PHYSICAL REVIEW D,2010,81(10):-. |
| APA | Cai, Rong-Gen,Su, Qiping,&Cai, RG , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China.(2010).On the dark sector interactions.PHYSICAL REVIEW D,81(10),-. |
| MLA | Cai, Rong-Gen,et al."On the dark sector interactions".PHYSICAL REVIEW D 81.10(2010):-. |
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