On dark energy models of single scalar field
文献类型：期刊论文
| 作者 | Li, MZ; Qiu, TT; Cai, YF; Zhang, XM;张新民 |
| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2012 |
| 期号 | 4页码:3 |
| 关键词 | dark energy theory cosmological perturbation theory |
| 英文摘要 | In this paper we revisit the dynamical dark energy model building based on single scalar field involving higher derivative terms. By imposing a degenerate condition on the higher derivatives in curved spacetime, one can select the models which are free from the ghost mode and the equation of state is able to cross the cosmological constant boundary smoothly, dynamically violate the null energy condition. Generally the Lagrangian of this type of dark energy models depends on the second derivatives linearly. It behaves like an imperfect fluid, thus its cosmological perturbation theory needs to be generalized. We also study such a model with explicit form of degenerate Lagrangian and show that its equation of state may cross - 1 without any instability. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000303665000003 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224375]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | Li, MZ,Qiu, TT,Cai, YF,et al. On dark energy models of single scalar field[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(4):3. |
| APA | Li, MZ,Qiu, TT,Cai, YF,&Zhang, XM；张新民.(2012).On dark energy models of single scalar field.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(4),3. |
| MLA | Li, MZ,et al."On dark energy models of single scalar field".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .4(2012):3. |
入库方式： OAI收割
来源：高能物理研究所
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