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题名: Nonlinear CMB temperature anisotropy from gravitational perturbations
作者: Gao, Xian
刊名: PHYSICAL REVIEW D
出版日期: 2010
卷号: 82, 期号:10, 页码:-
关键词: MICROWAVE BACKGROUND ANISOTROPIES ;  2ND-ORDER PERTURBATIONS ;  NON-GAUSSIANITY ;  FLUCTUATIONS ;  INFLATION ;  EVOLUTION ;  MODELS
学科分类: Physics
通讯作者: Gao, XA , Chinese Acad Sci, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, 55 Zhong Guan Cun E Rd, Beijing 100190, Peoples R China
部门归属: Chinese Acad Sci, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Nonlinear CMB temperature anisotropies up to the third order on large scales are calculated. On large scales and in the Sachs-Wolfe limit, we give the explicit expression for the observed temperature anisotropy in terms of the primordial curvature perturbation up to the third order. We derived the final bispectrum and trispectrum of anisotropies and the corresponding nonlinear parameters, in which the contributions to the observed non-Gaussianity from primordial perturbations and from the nonlinear mapping from primordial curvature perturbation to the temperature anisotropy are transparently separated.
资助者: NSFC[10535060/A050207, 10821504]; Ministry of Science and Technology[2007CB815401]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000284049800001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5012
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Gao, Xian. Nonlinear CMB temperature anisotropy from gravitational perturbations[J]. PHYSICAL REVIEW D,2010,82(10):-.
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