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题名: Dark energy and the future fate of the Universe
作者: Gong, Yungui ;  Zhang, Yuan-Zhong
刊名: MODERN PHYSICS LETTERS A
出版日期: 2007
卷号: 22, 期号:35, 页码:2689-2699
关键词: MODEL ;  CONSTRAINTS ;  ACCELERATION ;  REDSHIFT ;  TRANSITION ;  EVOLUTION
学科分类: Physics
通讯作者: Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
部门归属: [Gong, YG] Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China; [Zhang, YZ] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We consider the possibility of observing the onset of the late time inflation of our patch of the Universe. The Hubble size criterion and the event horizon criterion are applied to several dark energy models to discuss the problem of future inflation of the Universe. We find that the acceleration has not lasted long enough to confirm the onset of inflation by present observations for the dark energy model with constant equation of state, the holographic dark energy model and the generalized Chaplygin gas (GCG) model. For the flat Lambda CDM model with Omega(m0) = 0.3, we find that if we use the Hubble size criterion, we need to wait until the a(v) which is the scale factor at the time when the onset of inflation is observed reaches 3.59 times of scale factor a(T) when the onset of inflation is observed reaches 3.59 times of the scale factor a(T) when the Universe started acceleration, and we need to wait until a(v) = 2.3a(T) to see the onset of inflation if we use the event horizon criterion. For the flat holographic dark energy model with d = 1, we find that a(v) = 3.46a(T) with the Hubble horizon and a(v) = 2.34a(T) with the event horizon, respectively. For the flat GCG model with the best supernova fitting parameter alpha = 1.2, we find that a(v) = 5.50a(T) with the Hubble horizon and a(v) = 2.08a(T) with the event horizon, respectively.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000251805600007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5626
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Gong, Yungui,Zhang, Yuan-Zhong. Dark energy and the future fate of the Universe[J]. MODERN PHYSICS LETTERS A,2007,22(35):2689-2699.
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