| 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 | |
| Source Publication | PHYSICS LETTERS B
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| Volume | 607Issue:1-2Pages:#REF! |
| Corresponding Author | Feng, B (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China. |
| Subtype | Article |
| Abstract | 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. |
| Subject Area | Physics |
| DOI | 10.1016/j.physletb.2004.12.071 |
| Indexed By | SCI |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000226817500005 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/225651 |
| Collection | 理论物理室 |
| Recommended Citation 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!. |
| 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!. |
| MLA | 冯波,et al."Dark energy constraints from the cosmic age and supernova".PHYSICS LETTERS B 607.1-2(2005):#REF!. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 453.pdf（380KB） | 期刊论文 | 作者接受稿 | 限制开放 | CC BY-NC-SA | Application Full Text | |
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