| 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 Publication | INTERNATIONAL JOURNAL OF MODERN PHYSICS D
 |
| Volume | 17Issue: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 |
| Subtype | Article |
| Abstract | In 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. |
| Keyword | dark energy sound speed perturbation no-go theorem |
| Subject Area | Astronomy & Astrophysics |
| DOI | 10.1142/S0218271808012784 |
| URL | 查看原文 |
| Indexed By | INSPIREHEP ; ADS |
| Language | 英语 |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000259047300006 |
| ADS Bibcode | 2008IJMPD..17.1229X |
| ADS URL | https://ui.adsabs.harvard.edu/abs/2008IJMPD..17.1229X |
| ADS CITATIONS | https://ui.adsabs.harvard.edu/abs/2008IJMPD..17.1229X/citations |
| inspireid | 746112 |
| inspireURL | https://inspirehep.net/literature/746112 |
| Citation statistics |
Cited Times:103 [INSPIRE]
Cited Times:102 [ADS]
|
| Document Type | 期刊论文 |
| Identifier | http://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 Affilication | Institute 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 | ||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment