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题名: Dark energy and fate of the Universe
作者: Li, XD ;  Wang, S ;  Huang, QG ;  Zhang, X ;  Li, M
刊名: SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
出版日期: 2012
卷号: 55, 期号:7, 页码:1330-1334
关键词: SUPERNOVA LEGACY SURVEY ;  HUBBLE-SPACE-TELESCOPE ;  DYNAMICS ;  PARAMETRIZATIONS ;  CONSTRAINTS
学科分类: Physics
通讯作者: Zhang, X (reprint author), Northeastern Univ, Dept Phys, Coll Sci, Shenyang 110004, Peoples R China.
部门归属: [Zhang Xin] Northeastern Univ, Dept Phys, Coll Sci, Shenyang 110004, Peoples R China; [Li XiaoDong; Wang Shuang] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China; [Li XiaoDong; Wang Shuang; Huang QingGuo; Li Miao] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Huang QingGuo; Li Miao] Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Zhang Xin] Peking Univ, Ctr High Energy Phys, Beijing 100080, Peoples R China
英文摘要: We explore the ultimate fate of the Universe by using a divergence-free parametrization for dark energy w(z)=w (0)+w (a) [ln(2 + z) / (1 + z) - ln 2]. Unlike the Chevallier-Polarski-Linder parametrization, this parametrization has well behaved, bounded behavior for both high redshifts and negative redshifts, and thus can genuinely cover many theoretical dark energy models. After constraining the parameter space of this parametrization by using the current cosmological observations, we find that, at the 95.4% confidence level, our Universe can still exist at least 16.7 Gyr before it ends in a big rip. Moreover, for the phantom energy dominated Universe, we find that a gravitationally bound system will be destroyed at a time , where P is the period of a circular orbit around this system, before the big rip.
资助者: Project of Knowledge Innovation Program of Chinese Academy of Sciences; National Natural Science Foundation of China [11105053, 10705041, 10975032, 11175042, 10535060, 10975172, 10821504]; National Ministry of Education of China [NCET-09-0276, N100505001]; National Basic Research Program of China [2007CB815401]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000305419500029
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15074
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Li, XD,Wang, S,Huang, QG,et al. Dark energy and fate of the Universe[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2012,55(7):1330-1334.
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