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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
Source PublicationMODERN PHYSICS LETTERS A
KeywordModel Constraints Acceleration Redshift Transition Evolution
AbstractWe 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.
2007
ISSN0217-7323
Volume22Issue:35Pages:2689-2699
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5626
CollectionSCI期刊论文
Corresponding AuthorGong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
Recommended Citation
GB/T 7714
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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