Constraints on the Dvali-Gabadadze-Porrati model from recent supernova observations and baryon acoustic oscillations
文献类型：期刊论文
| 作者 | Guo, Zong-Kuan ; Zhu, Zong-Hong; Alcaniz, J. S.; Zhang, Yuan-Zhong; Guo, ZK , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2006 |
| 卷号 | 646期号:1页码:1-7 |
| ISSN号 | 0004-637X |
| 关键词 | Holographic Dark Energy High-redshift Supernovae Equation-of-state Probe Wmap Observations Hubble-space-telescope Cosmological Constant Cardassian Expansion Accelerating Universe Ia Supernovae Parameters |
| 英文摘要 | Although there is mounting observational evidence that the expansion of our universe is undergoing a late-time acceleration, the mechanism for this acceleration is yet unknown. In the so-called Dvali-Gabadadze-Porrati (DGP) model this phenomenon is attributed to gravitational "leakage'' into extra dimensions. In this work, we mainly focus our attention on the constraints on the model from the "gold sample'' of Type Ia supernovae (SNe Ia), the first-year data from the Supernova Legacy Survey (SNLS), and the baryon acoustic oscillation (BAO) peak found in the Sloan Digital Sky Survey (SDSS). At 99.73% confidence level, the combination of the three databases provides Omega(m) = 0.270(-0.017)(+0. 018) and Omega(rc) = 0.216(-0.013)(+0.012) (hence, a spatially closed universe with Omega(k) = -0.350(-0.083)(+0.080)), which seems to be in contradiction with the most recent WMAP results indicating a flat universe. Based on this result, we also estimated the transition redshift (at which the universe switches from deceleration to acceleration) to be 0.70 < z(q=0) < 1.01, at 2 sigma confidence level. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000239644900001 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5944]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Guo, ZK , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Zong-Kuan,Zhu, Zong-Hong,Alcaniz, J. S.,et al. Constraints on the Dvali-Gabadadze-Porrati model from recent supernova observations and baryon acoustic oscillations[J]. ASTROPHYSICAL JOURNAL,2006,646(1):1-7. |
| APA | Guo, Zong-Kuan,Zhu, Zong-Hong,Alcaniz, J. S.,Zhang, Yuan-Zhong,&Guo, ZK , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China.(2006).Constraints on the Dvali-Gabadadze-Porrati model from recent supernova observations and baryon acoustic oscillations.ASTROPHYSICAL JOURNAL,646(1),1-7. |
| MLA | Guo, Zong-Kuan,et al."Constraints on the Dvali-Gabadadze-Porrati model from recent supernova observations and baryon acoustic oscillations".ASTROPHYSICAL JOURNAL 646.1(2006):1-7. |
入库方式： OAI收割
来源：理论物理研究所
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