On dark energy models of single scalar field
文献类型：期刊论文
| 作者 | Li, Mingzhe1,7; Qiu, Taotao2,3,4; Cai, Yifu5; Zhang, Xinmin6 |
| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2012-04-01 |
| 期号 | 4页码:003 |
| 关键词 | dark energy theory cosmological perturbation theory |
| ISSN号 | 1475-7516 |
| 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 研究领域[WOS] | Astronomy & Astrophysics ; Physics |
| 关键词[WOS] | QUINTOM MODEL ; COSMOLOGICAL CONSEQUENCES ; ACCELERATING UNIVERSE ; COSMIC ACCELERATION ; K-INFLATION ; CONSTRAINTS ; GRAVITY ; BRANE ; PERTURBATIONS ; COMPONENT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000303665000003 |
| 公开日期 | 2013-01-31 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/7988]  |
| 专题 | 紫金山天文台_空间目标与碎片观测研究基地 |
| 作者单位 | 1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 2.Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan 3.Natl Taiwan Univ, Ctr Theoret Sci, Taipei 10617, Taiwan 4.Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 106, Taiwan 5.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA 6.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 7.Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mingzhe,Qiu, Taotao,Cai, Yifu,et al. On dark energy models of single scalar field[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(4):003. |
| APA | Li, Mingzhe,Qiu, Taotao,Cai, Yifu,&Zhang, Xinmin.(2012).On dark energy models of single scalar field.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(4),003. |
| MLA | Li, Mingzhe,et al."On dark energy models of single scalar field".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .4(2012):003. |
入库方式： OAI收割
来源：紫金山天文台
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