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题名: Reconstruction of the primordial power spectrum from CMB data
作者: Guo, ZK ;  Schwarz, DJ ;  Zhang, YZ
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2011
期号: 8, 页码:31
关键词: OBSERVATIONS COSMOLOGICAL INTERPRETATION ;  WMAP DATA ;  ANISOTROPY ;  MODEL
学科分类: Physics
通讯作者: Guo, ZK (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
部门归属: [Guo, Zong-Kuan; Zhang, Yuan-Zhong] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Guo, Zong-Kuan; Schwarz, Dominik J.] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany
英文摘要: Measuring the deviation from scale invariance of the primordial power spectrum is a critical test of inflation. In this paper we reconstruct the shape of the primordial power spectrum of curvature perturbations from the cosmic microwave background data, including the 7-year Wilkinson Microwave Anisotropy Probe data and the Atacama Cosmology Telescope 148 GHz data, by using a binning method of a cubic spline interpolation in log-log space. We find that the power-law spectrum is preferred by the data and that the Harrison-Zel'dovich spectrum is disfavored at 95% confidence level. These conclusions hold with and without allowing for tensor modes, however the simpler model without tensors is preferred by the data. We do not find evidence for a feature in the primordial power spectrum - in full agreement with generic predictions from cosmological inflation.
资助者: Alexander von Humboldt Foundation; Chinese Academy of Science; National Basic Research Program of China [2010CB832805]; Deutsche Forschungsgemeinschaft (DFG)
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000294758200031
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14304
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Guo, ZK,Schwarz, DJ,Zhang, YZ. Reconstruction of the primordial power spectrum from CMB data[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011(8):31.
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