On dark energy isocurvature perturbation
Liu J(刘杰); Zhang XM(张新民); Liu, J; Li, MZ; Zhang, XM
刊名JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2011
期号6页码:28
关键词dark energy experiments dark energy theory
学科分类Astronomy & Astrophysics; Physics
DOI10.1088/1475-7516/2011/06/028
通讯作者[Liu, Jie ; Zhang, Xinmin] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Li, Mingzhe] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China ; [Zhang, Xinmin] Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China ; [Li, Mingzhe] Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China
文章类型Article
英文摘要Determining the equation of state of dark energy with astronomical observations is crucially important to understand the nature of dark energy. In performing a likelihood analysis of the data, especially of the cosmic microwave background and large scale structure data the dark energy perturbations have to be taken into account both for theoretical consistency and for numerical accuracy. Usually, one assumes in the global fitting analysis that the dark energy perturbations are adiabatic. In this paper, we study the dark energy isocurvature per analytically and discuss its implications for the cosmic microwave background radiation and large scale structure. Furthermore, with the current astronomical observational data and by employing Markov Chain Monte Carlo method, we perform a global analysis of cosmological parameters assuming general Initial conditions for the dark energy perturbations. The results show that the dark energy isocurvature perturbations are very weakly constrained and that purely adiabatic initial conditions are consistent with the data.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000292332400028
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240372
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Liu J,Zhang XM,Liu, J,et al. On dark energy isocurvature perturbation[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011(6):28.
APA 刘杰,张新民,Liu, J,Li, MZ,&Zhang, XM.(2011).On dark energy isocurvature perturbation.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(6),28.
MLA 刘杰,et al."On dark energy isocurvature perturbation".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .6(2011):28.
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