IHEP OpenIR  > 粒子天体物理中心
Constraints on the sound speed of dynamical dark energy
Xia JQ(夏俊卿); Cai YF(蔡一夫); Qiu TT(邱涛涛); Zhao GB(赵公博); Zhang XM(张新民); Xia, JQ; Cai, YF; Qiu, TT; Zhao, GB; Zhang, XM
2008
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS D
Volume17Issue:8Pages:1229-1243
Corresponding Author[Xia, Jun-Qing ; Cai, Yi-Fu ; Qiu, Tao-Tao ; Zhao, Gong-Bo ; Zhang, Xinmin] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
SubtypeArticle
AbstractIn this paper we study in detail the sound speed - c(s)(2), which is directly related to the classical perturbations - of dynamical dark energy (DE). We consider especially the case with an equation of state crossing the cosmological constant boundary, and show its implications for cosmic microwave background (CMB) anisotropy. With the present observational data on the CMB, the Type Ia supernova (SNIa) and galaxy clustering, we perform a global analysis to constrain the sound speed of DE, using the Markov chain Monte Carlo method. We find that the sound speed of DE is weakly constrained by current observations, and thus futuristic precision measurements of the CMB on a very large angular scale (low multipoles) are necessary.
Keyworddark energy sound speed perturbation no-go theorem
Subject AreaAstronomy & Astrophysics
DOI10.1142/S0218271808012784
URL查看原文
Indexed ByINSPIREHEP ; ADS
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000259047300006
ADS Bibcode2008IJMPD..17.1229X
ADS URLhttps://ui.adsabs.harvard.edu/abs/2008IJMPD..17.1229X
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2008IJMPD..17.1229X/citations
inspireid746112
inspireURLhttps://inspirehep.net/literature/746112
Citation statistics
Cited Times:103 [INSPIRE]
Cited Times:102 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/239209
Collection粒子天体物理中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Xia JQ,Cai YF,Qiu TT,et al. Constraints on the sound speed of dynamical dark energy[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS D,2008,17(8):1229-1243.
APA 夏俊卿.,蔡一夫.,邱涛涛.,赵公博.,张新民.,...&Zhang, XM.(2008).Constraints on the sound speed of dynamical dark energy.INTERNATIONAL JOURNAL OF MODERN PHYSICS D,17(8),1229-1243.
MLA 夏俊卿,et al."Constraints on the sound speed of dynamical dark energy".INTERNATIONAL JOURNAL OF MODERN PHYSICS D 17.8(2008):1229-1243.
Files in This Item:
File Name/Size DocType Version Access License
6352.pdf(400KB)期刊论文作者接受稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[夏俊卿]'s Articles
[蔡一夫]'s Articles
[邱涛涛]'s Articles
Baidu academic
Similar articles in Baidu academic
[夏俊卿]'s Articles
[蔡一夫]'s Articles
[邱涛涛]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[夏俊卿]'s Articles
[蔡一夫]'s Articles
[邱涛涛]'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.