Dark energy and fate of the Universe

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	Dark energy and fate of the Universe
	Huang, QG; Li, M
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2012
卷号	55 期号:7 页码:1330-1334
关键词	SUPERNOVA LEGACY SURVEY HUBBLE-SPACE-TELESCOPE DYNAMICS PARAMETRIZATIONS CONSTRAINTS
ISSN号	1674-7348
通讯作者	Zhang, X (reprint author), Northeastern Univ, Dept Phys, Coll Sci, Shenyang 110004, 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.
学科主题	Physics
收录类别	SCI
资助信息	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]
原文出处	http://dx.doi.org/10.1007/s11433-012-4748-z
语种	英语
WOS记录号	WOS:000305419500029
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15074]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Huang, QG,Li, M. Dark energy and fate of the Universe[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2012,55(7):1330-1334.
APA	Huang, QG,&Li, M.(2012).Dark energy and fate of the Universe.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,55(7),1330-1334.
MLA	Huang, QG,et al."Dark energy and fate of the Universe".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 55.7(2012):1330-1334.