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Cosmological constraints on new agegraphic dark energy
Wei, Hao; Cai, Rong-Gen; Wei, H , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
2008
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号663期号:40910页码:1-6
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.
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
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
学科领域Physics
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收录类别SCI
WOS记录号WOS:000256744300001
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被引频次:132[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5534
专题1978-2010年知识产出
通讯作者Wei, H , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
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Wei, Hao,Cai, Rong-Gen,Wei, H , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China. Cosmological constraints on new agegraphic dark energy[J]. PHYSICS LETTERS B,2008,663(40910):1-6.
APA Wei, Hao,Cai, Rong-Gen,&Wei, H , Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.(2008).Cosmological constraints on new agegraphic dark energy.PHYSICS LETTERS B,663(40910),1-6.
MLA Wei, Hao,et al."Cosmological constraints on new agegraphic dark energy".PHYSICS LETTERS B 663.40910(2008):1-6.
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