Uncorrelated estimates of the primordial power spectrum

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	Uncorrelated estimates of the primordial power spectrum
	Guo, ZK
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2011
期号	11 页码:32
关键词	OBSERVATIONS COSMOLOGICAL INTERPRETATION WMAP DATA ANISOTROPY RECONSTRUCTION INFLATION TELESCOPE MODEL
ISSN号	1475-7516
通讯作者	Guo, ZK (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
英文摘要	We use the localized principle component analysis to detect deviations front scale invariance of the primordial power spectrum of curvature perturbations. With the technique we make uncorrelated estimates of the primordial power spectrum with five wavenumber bins. In the framework of a minimal ACDM model, using the latest cosmic microwave background data from the WMAP and ACT experiments we find that more than 95% of the preferred models are incompatible with the assumption of scale-invariance, but still compatible with a power-law primordial spectrum. We also forecast the sensitivity and constraints achievable by the Planck experiment by performing Monte Carlo studies on simulated data. Planck could significantly improve the constraints on the primordial power spectrum, especially at small scales by roughly a factor of 4.
学科主题	Physics
收录类别	SCI
资助信息	Chinese Academy of Science; National Basic Research Program of China [2010CB832805]
原文出处	http://dx.doi.org/10.1088/1475-7516/2011/11/032
语种	英语
WOS记录号	WOS:000298141300032
公开日期	2013-05-17
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14239]
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. Uncorrelated estimates of the primordial power spectrum[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011(11):32.
APA	Guo, ZK.(2011).Uncorrelated estimates of the primordial power spectrum.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(11),32.
MLA	Guo, ZK."Uncorrelated estimates of the primordial power spectrum".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .11(2011):32.