| Dark energy constraints from the cosmic age and supernova |
| Feng B(冯波); Wang XL(王秀莲); Zhang XM(张新民) ; Feng, B; Wang, XL; Zhang, XM
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| 2005
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| 发表期刊 | PHYSICS LETTERS B
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| 卷号 | 607期号:1-2页码:#REF! |
| 通讯作者 | Feng, B (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China.
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| 文章类型 | Article
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| 摘要 | Using the low limit of cosmic ages from globular cluster and the white dwarfs: t(0) > 12 Gyr, together with recent new high redshift supernova observations from the HST/GOODS program and previous supernova data, we give a considerable estimation of the equation of state for dark energy, with uniform priors as weak as 0.2 < Omega(m) < 0.4 or 0.1 < Omega(m)h(2) < 0.16. We find cosmic age limit plays a significant role in lowering the upper bound on the variation amplitude of dark energy equation of state. We propose in this Letter a new scenario of dark energy dubbed quintom, which gives rise to the equation of state larger than -1 in the past and less than -1 today, satisfying current observations. In addition we have also considered the implications of recent X-ray gas mass fraction data on dark energy, which favors a negative running of the equation of state. (C) 2004 Elsevier B.V. All rights reserved. |
| 学科领域 | Physics
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| DOI | 10.1016/j.physletb.2004.12.071
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| 收录类别 | SCI
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| WOS类目 | Physics, Multidisciplinary
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| WOS记录号 | WOS:000226817500005
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.ihep.ac.cn/handle/311005/225651
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| 专题 | 理论物理室
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推荐引用方式
GB/T 7714 |
Feng B,Wang XL,Zhang XM,et al. Dark energy constraints from the cosmic age and supernova[J]. PHYSICS LETTERS B,2005,607(1-2):#REF!.
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| APA |
冯波,王秀莲,张新民,Feng, B,Wang, XL,&Zhang, XM.(2005).Dark energy constraints from the cosmic age and supernova.PHYSICS LETTERS B,607(1-2),#REF!.
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| MLA |
冯波,et al."Dark energy constraints from the cosmic age and supernova".PHYSICS LETTERS B 607.1-2(2005):#REF!.
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