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题名: Cosmological constraints on new agegraphic dark energy
作者: Wei, Hao ;  蔡荣根
刊名: PHYSICS LETTERS B
出版日期: 2008
卷号: 663, 期号:40910, 页码:1-6
关键词: KAROLYHAZY UNCERTAINTY RELATION ;  ESSENCE SUPERNOVA SURVEY ;  OBSERVATIONAL H(Z) DATA ;  PROBE WMAP OBSERVATIONS ;  DIGITAL SKY SURVEY ;  HUBBLE CONSTANT ;  SPACE-TIME ;  HOLOGRAPHIC FOAM ;  MODELS ;  PARAMETER
学科分类: Physics
通讯作者: Wei, H , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
部门归属: [Wei, H] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China; [Wei, H] Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China; [Cai, RG] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: In this work, we consider the cosmological constraints on the new agegraphic dark energy (NADE) proposed in arXiv: 0708.0884, by using the observational data of type la supernovae (SNIa), the shift parameter from cosmic microwave background (CMB) and the baryon acoustic oscillation (BAO) peak from large scale structures (LSS). Thanks to its special analytic features in the radiation-dominated and matter-dominated epochs, NADE is a single-para meter model in practice because once the single model parameter n is given, all other physical quantities of NADE can be determined correspondingly. The joint analysis gives the best-fit value (with 1 sigma uncertainty) n = 2.716(-0.109)(+0.111) and the derived Omega(m0), Omega(q0) and w(q0) (with 1 sigma uncertainties) are 0.295(-0.020)(+0.020), 0.705(-0.020)(+0.020) and 0.794(-0.005)(+0.006), respectively. In addition, we find that the coincidence problem could be solved naturally in the NADE model provided that n is of order unity. (C) 2008 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000256744300001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5534
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Wei, Hao,Cai, Rong-Gen. Cosmological constraints on new agegraphic dark energy[J]. PHYSICS LETTERS B,2008,663(40910):1-6.
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