More on QCD ghost dark energy
文献类型：期刊论文
| 作者 | Cai, RG
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:2页码:23511 |
| 关键词 | GALAXY REDSHIFT SURVEY DIGITAL SKY SURVEY LARGE-N-LIMIT COSMOLOGICAL CONSTANT CURRENT-ALGEBRA 2DF-SDSS LRG QSO SURVEY UNIVERSE VACUUM MODEL |
| ISSN号 | 1550-7998 |
| 通讯作者 | Cai, RG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China. |
| 英文摘要 | The difference between the vacuum energy of quantum fields in Minkowski space and in a Friedmann-Robertson-Walker universe might be related to the observed dark energy. The vacuum energy of the Veneziano ghost field introduced to solve the U(1)(A) problem in QCD is of the form H + O(H-2). Based on this, we study the dynamical evolution of a phenomenological dark energy model whose energy density is of the form alpha H + beta H-2. In this model, the universe approaches a de Sitter phase at late times. We fit the model with current observational data, including SnIa, BAO, CMB, BBN, the Hubble parameter, and the growth rate of matter perturbation. It shows that the universe begins to accelerate at redshift z similar to 0.75, and this model is consistent with current data. In particular, this model fits the data of the growth factor well as the Lambda CDM model. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | NSFC [10821504, 10975168, 11035008, 11175077]; Ministry of Science and Technology of China [2010CB833004]; Chinese Academy of Sciences [KJCX2-EW-W01]; Natural Science Foundation of Liaoning province [20102124] |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevD.86.023511 |
| 语种 | 英语 |
| WOS记录号 | WOS:000306193200001 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15059]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Cai, RG. More on QCD ghost dark energy[J]. PHYSICAL REVIEW D,2012,86(2):23511. |
| APA | Cai, RG.(2012).More on QCD ghost dark energy.PHYSICAL REVIEW D,86(2),23511. |
| MLA | Cai, RG."More on QCD ghost dark energy".PHYSICAL REVIEW D 86.2(2012):23511. |
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。