Late-time phantom universe in SO(1,1) dark energy model with exponential potential
文献类型：期刊论文
| 作者 | Wei, YH; Wei, YH , Bohai Univ, Dept Phys, Liaoning 121000, Peoples R China. |
| 刊名 | MODERN PHYSICS LETTERS A
 |
| 出版日期 | 2005 |
| 卷号 | 20期号:15页码:1147-1154 |
| 关键词 | Equation-of-state Hubble-space-telescope Cosmology Quantum Supernovae Singularities Constraints Component Matter |
| ISSN号 | 0217-7323 |
| 英文摘要 | We discuss the late-time property of universe and phantom field in the SO(1, 1) dark energy model for the potential V = V(0)e-β&UPhi;(α) with α and β two positive constants. We assume in advance some conditions satisfied by the late-time field to simplify equations, which are confirmed to be correct from the eventual results. For α < 2, the field falls exponentially off and the phantom equation of state rapidly approaches -1. When α = 2, the kinetic energy p(k) and the coupling energy p(c) become comparable but there is always p(k) < -p(c) so that the phantom property of field proceeds to hold. The analysis on the perturbation to the late-time field &UPhi; illustrates the square effective mass of the perturbation field is always positive and thus the phantom is stable. The universe considered currently may evade the future sudden singularity and will evolve to de Sitter expansion phase. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000229569400004 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13818]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Wei, YH , Bohai Univ, Dept Phys, Liaoning 121000, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wei, YH,Wei, YH , Bohai Univ, Dept Phys, Liaoning 121000, Peoples R China.. Late-time phantom universe in SO(1,1) dark energy model with exponential potential[J]. MODERN PHYSICS LETTERS A,2005,20(15):1147-1154. |
| APA | Wei, YH,&Wei, YH , Bohai Univ, Dept Phys, Liaoning 121000, Peoples R China..(2005).Late-time phantom universe in SO(1,1) dark energy model with exponential potential.MODERN PHYSICS LETTERS A,20(15),1147-1154. |
| MLA | Wei, YH,et al."Late-time phantom universe in SO(1,1) dark energy model with exponential potential".MODERN PHYSICS LETTERS A 20.15(2005):1147-1154. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。