ITP OpenIR  > 理论物理所科研产出  > SCI论文
Yang, WQ; Xu, LX; Yang, WQ (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
Testing coupled dark energy with large scale structure observation
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Language英语
KeywordSupernova Legacy Survey Baryon Acoustic-oscillations Interacting Quintessence Cosmic Structure Growth-rate Constraints Models Matter Perturbations Galaxies
AbstractThe 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.
2014
ISSN1475-7516
Issue8Pages:34
Subject AreaPhysics
DOI10.1088/1475-7516/2014/08/034
Indexed BySCI
Funding OrganizationNSFC [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]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15690
Collection理论物理所科研产出_SCI论文
Corresponding AuthorYang, WQ (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
Recommended Citation
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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