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Gong, Yungui; Zhang, Yuan-Zhong ; Gong, YG , Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
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| Dark energy and the future fate of the Universe | |
| Source Publication | MODERN PHYSICS LETTERS A
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| Keyword | Model Constraints Acceleration Redshift Transition Evolution |
| Abstract | 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. |
| 2007 | |
| ISSN | 0217-7323 |
| Volume | 22Issue:35Pages:2689-2699 |
| Subject Area | Physics |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/5626 |
| Collection | SCI期刊论文 |
| Corresponding Author | Gong, 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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