Testing coupled dark energy with large scale structure observation
文献类型：期刊论文
| 作者 | Yang, WQ ; Xu, LX |
| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2014 |
| 期号 | 8页码:34 |
| ISSN号 | 1475-7516 |
| 关键词 | SUPERNOVA LEGACY SURVEY BARYON ACOUSTIC-OSCILLATIONS INTERACTING QUINTESSENCE COSMIC STRUCTURE GROWTH-RATE CONSTRAINTS MODELS MATTER PERTURBATIONS GALAXIES |
| 通讯作者 | Yang, WQ (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China. |
| 英文摘要 | The coupling between the dark components provides a new approach to mitigate the coincidence problem of cosmological standard model. In this paper, dark energy is treated as a fluid with a constant equation of state, whose coupling with dark matter is (Q) over bar = 3H xi(x)(rho) over bar (x). In the frame of dark energy, we derive the evolution equations for the density and velocity perturbations. According to the Markov Chain Monte Carlo method, we constrain the model by currently available cosmic observations which include cosmic microwave background radiation, baryon acoustic oscillation, type Ia supernovae, and f sigma(8)(z) data points from redshift-space distortion. The results show the interaction rate in 3 sigma regions: xi(x) = 0.00328(-0.00328-0.00328-0.00328)(+0.000736+0.00549+0.00816), which means that the recently cosmic observations favor a small interaction rate which is up to the order of 10(-2), meanwhile, the measurement of redshift-space distortion could rule out the large interaction rate in the 1 sigma region. |
| 学科主题 | Physics |
| 资助信息 | NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1088/1475-7516/2014/08/034 |
| 语种 | 英语 |
| WOS记录号 | WOS:000341848800034 |
| 公开日期 | 2015-06-03 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15690]  |
| 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 | Yang, WQ,Xu, LX. Testing coupled dark energy with large scale structure observation[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2014(8):34. |
| APA | Yang, WQ,&Xu, LX.(2014).Testing coupled dark energy with large scale structure observation.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8),34. |
| MLA | Yang, WQ,et al."Testing coupled dark energy with large scale structure observation".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2014):34. |
入库方式： OAI收割
来源：理论物理研究所
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