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题名: Cosmological constraints on the new holographic dark energy model with action principle
作者: Li, M ;  Li, XD ;  Meng, J ;  Zhang, ZH
刊名: PHYSICAL REVIEW D
出版日期: 2013
卷号: 88, 期号:2, 页码:23503
关键词: BARYON ACOUSTIC-OSCILLATIONS ;  HUBBLE-SPACE-TELESCOPE ;  BLACK-HOLES ;  ACCELERATING UNIVERSE ;  POWER SPECTRUM ;  DATA RELEASE ;  CONSTANT ;  ENTROPY ;  THERMODYNAMICS ;  QUINTESSENCE
学科分类: Physics
通讯作者: Li, M (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Li, Miao; Li, Xiao-Dong; Meng, Jun; Zhang, Zhenhui] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Li, Miao; Meng, Jun; Zhang, Zhenhui] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Li, Miao; Meng, Jun; Zhang, Zhenhui] Chinese Acad Sci, State Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Li, Xiao-Dong] Korea Inst Adv Study, Seoul 130722, South Korea
英文摘要: Recently, a new holographic dark energy (HDE) model with action principle was proposed [M. Li and R. X. Miao, arXiv:1210.0966]. It is the first time that the HDE model is derived from the action principle. This model completely solves the causality and circular problems in the original HDE model and automatically gives rise to a dark radiation component. Thus, it is worth investigating such an interesting model by confronting it with the current cosmological observations, so that we can check whether the model is consistent with the data and determine the regions of parameter space allowed. These issues are explored in this work. First, we investigate the dynamical behaviors and the cosmic expansion history of the model and discuss how they are related with the model parameter c. Then, we fit the model to a combination of the present Union2.1 + BAO + CMB + H-0 data. We find the model yields chi(2)(min) = 548: 798 (in a nonflat universe), comparable to the results of the original HDE model (549.461) and the concordant Lambda CDM model (550.354). At 95.4% C. L., we get 1.41 < c < 3.09 and correspondingly -2.25 < w(z = -1) < -1.39, implying the big-rip fate of the Universe at a high confidence level. Besides, for the constraints on dark radiation, we also get a rough estimation N-eff = 3.54(-0.45-0.76)(+0.32+0.67), with the central value slightly larger than the standard value 3.046.
资助者: NSFC [10535060/A050207, 10975172, 10821504]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000321125500003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15337
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Li, M,Li, XD,Meng, J,et al. Cosmological constraints on the new holographic dark energy model with action principle[J]. PHYSICAL REVIEW D,2013,88(2):23503.
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