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Dark energy and the future fate of the Universe
Gong, Yungui; Zhang, Yuan-Zhong; Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
2007
发表期刊MODERN PHYSICS LETTERS A
ISSN0217-7323
卷号22期号:35页码:2689-2699
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.
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
关键词Model Constraints Acceleration Redshift Transition Evolution
学科领域Physics
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收录类别SCI
WOS记录号WOS:000251805600007
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5626
专题理论物理所1978-2010年知识产出
通讯作者Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
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Gong, Yungui,Zhang, Yuan-Zhong,Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China. Dark energy and the future fate of the Universe[J]. MODERN PHYSICS LETTERS A,2007,22(35):2689-2699.
APA Gong, Yungui,Zhang, Yuan-Zhong,&Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China.(2007).Dark energy and the future fate of the Universe.MODERN PHYSICS LETTERS A,22(35),2689-2699.
MLA Gong, Yungui,et al."Dark energy and the future fate of the Universe".MODERN PHYSICS LETTERS A 22.35(2007):2689-2699.
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