Reconstruction of the primordial power spectrum from CMB data

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	Reconstruction of the primordial power spectrum from CMB data
	Guo, ZK
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2011
期号	8 页码:31
关键词	OBSERVATIONS COSMOLOGICAL INTERPRETATION WMAP DATA ANISOTROPY MODEL
ISSN号	1475-7516
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.
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.
学科主题	Physics
收录类别	SCI
资助信息	Alexander von Humboldt Foundation; Chinese Academy of Science; National Basic Research Program of China [2010CB832805]; Deutsche Forschungsgemeinschaft (DFG)
原文出处	http://dx.doi.org/10.1088/1475-7516/2011/08/031
语种	英语
WOS记录号	WOS:000294758200031
公开日期	2013-05-17
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14304]
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	Guo, ZK. Reconstruction of the primordial power spectrum from CMB data[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011(8):31.
APA	Guo, ZK.(2011).Reconstruction of the primordial power spectrum from CMB data.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8),31.
MLA	Guo, ZK."Reconstruction of the primordial power spectrum from CMB data".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2011):31.