ITP OpenIR  > 理论物理所2014年知识产出
Testing coupled dark energy with large scale structure observation
Yang, WQ; Xu, LX; Yang, WQ (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
2014
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
期号8页码:34
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.
部门归属[Yang, Weiqiang ; Xu, Lixin] Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China ; [Xu, Lixin] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
关键词Supernova Legacy Survey Baryon Acoustic-oscillations Interacting Quintessence Cosmic Structure Growth-rate Constraints Models Matter Perturbations Galaxies
学科领域Physics
资助者NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01]
DOI10.1088/1475-7516/2014/08/034
URL查看原文
收录类别SCI
语种英语
资助者NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01]
WOS记录号WOS:000341848800034
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15690
专题理论物理所2014年知识产出
通讯作者Yang, WQ (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
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GB/T 7714
Yang, WQ,Xu, LX,Yang, WQ . Testing coupled dark energy with large scale structure observation[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2014(8):34.
APA Yang, WQ,Xu, LX,&Yang, WQ .(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.
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