NULL ENERGY CONDITION AND DARK ENERGY MODELS
文献类型：期刊论文
| 作者 | Qiu TT(邱涛涛); Cai YF(蔡一夫) ; Zhang XM(张新民); Qiu, TT; Cai, YF; Zhang, XM
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| 刊名 | MODERN PHYSICS LETTERS A
 |
| 出版日期 | 2008 |
| 卷号 | 23期号:32页码:2787-2798 |
| 关键词 | Quintom NEC |
| 通讯作者 | [Qiu, Taotao ; Cai, Yi-Fu ; Zhang, Xinmin] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China |
| 英文摘要 | Null Energy Condition (NEC) requires the equation of state (EoS) of the universe w(u) satisfy w(u) >= -1, which implies, for instance in a universe with matter and dark energy dominating w(u) = w(m)Omega(m) + w(de)Omega(de) = w(de)Omega(de) >= -1. In this paper we study constraints on the dark energy models from the requirement of the NEC. We will show that with Omega(de) similar to 0.7, w(de) < -1 at present epoch is possible. However, NEC excludes the possibility of w(de), < -1 forever as happened in the Phantom model, but if W-de < -1 stays for a short period of time as predicted in the Quintom theory, NEC can be satisfied. We take three examples of Quintom models of dark energy, namely the phenomenological EoS, the two-scalar-field model and the single scalar model with a modified Dirac-Born-Infeld (DB1) Lagrangian to show how this happens. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields ; Physics, Mathematical |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000260274200007 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/239824]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Qiu TT,Cai YF,Zhang XM,et al. NULL ENERGY CONDITION AND DARK ENERGY MODELS[J]. MODERN PHYSICS LETTERS A,2008,23(32):2787-2798. |
| APA | 邱涛涛,蔡一夫,张新民,Qiu, TT,Cai, YF,&Zhang, XM.(2008).NULL ENERGY CONDITION AND DARK ENERGY MODELS.MODERN PHYSICS LETTERS A,23(32),2787-2798. |
| MLA | 邱涛涛,et al."NULL ENERGY CONDITION AND DARK ENERGY MODELS".MODERN PHYSICS LETTERS A 23.32(2008):2787-2798. |
入库方式： OAI收割
来源：高能物理研究所
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