ITP OpenIR  > 理论物理所科研产出  > SCI论文
Chang, BR; Lu, JB; Xu, LX; Xu, LX (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
Matter sourced anisotropic stress for dark energy
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordBaryon Acoustic-oscillations Hubble Constant Growth-rate Galaxies
AbstractUsually a dark energy as a perfect fluid is characterized by the ratio of pressure to energy density (w = p/rho) and the ratio of their perturbations in its rest frame (c(s)(2) = delta p/delta rho). However, a dark energy would have other characteristics beyond its equation of state and the effective speed of sound. Here the extra property is the anisotropic stress sourced by matter as a simple extension to the perfect fluid model. At the background level, this anisotropic stress is zero with respect to the cosmological principle, but not at the first-order perturbation. We tested the viability of the existence of this kind of anisotropic stress by using the currently available cosmic observations through the geometrical and dynamical measurements. Using the Markov-chain Monte Carlo method, we found that the upper bounds on the anisotropic stress which enters into the summation of the Newtonian potentials should be of the order O(10(-3))Delta(m). We did not find any strong evidence for the existence of this matter-sourced anisotropic stress, even in the 1 sigma region.
2014
ISSN1550-7998
Volume90Issue:10Pages:103528
Subject AreaPhysics
DOI10.1103/PhysRevD.90.103528
Indexed BySCI
Funding OrganizationNSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01]; Open Project Program of the State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF101CJ1] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01]; Open Project Program of the State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF101CJ1] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01]; Open Project Program of the State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF101CJ1] ; NSFC [11275035]; Fundamental Research Funds for the Central Universities [DUT13LK01]; Open Project Program of the State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF101CJ1]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15564
Collection理论物理所科研产出_SCI论文
Corresponding AuthorXu, LX (reprint author), Dalian Univ Technol, Sch Phys & Optoelect Technol, Inst Theoret Phys, Dalian 116024, Peoples R China.
Recommended Citation
GB/T 7714
Chang, BR,Lu, JB,Xu, LX,et al. Matter sourced anisotropic stress for dark energy[J]. PHYSICAL REVIEW D,2014,90(10):103528.
APA Chang, BR,Lu, JB,Xu, LX,&Xu, LX .(2014).Matter sourced anisotropic stress for dark energy.PHYSICAL REVIEW D,90(10),103528.
MLA Chang, BR,et al."Matter sourced anisotropic stress for dark energy".PHYSICAL REVIEW D 90.10(2014):103528.
Files in This Item:
File Name/Size DocType Version Access License
Matter sourced aniso(834KB) 开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chang, BR]'s Articles
[Lu, JB]'s Articles
[Xu, LX]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chang, BR]'s Articles
[Lu, JB]'s Articles
[Xu, LX]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chang, BR]'s Articles
[Lu, JB]'s Articles
[Xu, LX]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.