Dynamics of holographic vacuum energy in the DGP model
文献类型：期刊论文
| 作者 | Wu, Xing; Cai, Rong-Gen ; Zhu, Zong-Hong; Zhu, ZH , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2008 |
| 卷号 | 77期号:4页码:- |
| 关键词 | Digital Sky Survey Probe Wmap Observations Dark Energy Cosmological Constant Ia Supernovae Data Release Accelerating Universe Constraints Galaxies Gravity |
| ISSN号 | 1550-7998 |
| 英文摘要 | We consider the evolution of the vacuum energy in the Dvali-Gabadadze-Porrati (DGP) model according to the holographic principle under the assumption that the relation linking the IR and UV cutoffs still holds in this scenario. The model is studied when the IR cutoff is chosen to be the Hubble scale H(-1), the particle horizon R(ph), and the future event horizon R(eh), respectively. The two branches of the DGP model are also taken into account. Through numerical analysis, we find that in the cases of H(-1) in the (+) branch and R(eh) in both branches, the vacuum energy can play the role of dark energy. Moreover, when considering the combination of the vacuum energy and the 5D gravity effect in both branches, the equation of state of the effective dark energy may cross -1, which may lead to the big rip singularity. Besides, we constrain the model with the Type Ia supernovae and baryon oscillation data and find that our model is consistent with current data within 1 sigma, and that the observations prefer either a pure holographic dark energy or a pure DGP model. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000253764800017 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5584]  |
| 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 | Zhu, ZH , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Xing,Cai, Rong-Gen,Zhu, Zong-Hong,et al. Dynamics of holographic vacuum energy in the DGP model[J]. PHYSICAL REVIEW D,2008,77(4):-. |
| APA | Wu, Xing,Cai, Rong-Gen,Zhu, Zong-Hong,&Zhu, ZH , Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China.(2008).Dynamics of holographic vacuum energy in the DGP model.PHYSICAL REVIEW D,77(4),-. |
| MLA | Wu, Xing,et al."Dynamics of holographic vacuum energy in the DGP model".PHYSICAL REVIEW D 77.4(2008):-. |
入库方式： OAI收割
来源：理论物理研究所
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