ITP OpenIR  > 理论物理所科研产出  > SCI论文
Guo, ZK; Zhang, YZ; Guo, ZK (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
Uncorrelated estimates of the primordial power spectrum
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Language英语
KeywordObservations Cosmological Interpretation Wmap Data Anisotropy Reconstruction Inflation Telescope Model
AbstractWe 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.
2011
ISSN1475-7516
Issue11Pages:32
Subject AreaPhysics
Indexed BySCI
Funding OrganizationChinese Academy of Science; National Basic Research Program of China [2010CB832805] ; Chinese Academy of Science; National Basic Research Program of China [2010CB832805] ; Chinese Academy of Science; National Basic Research Program of China [2010CB832805] ; Chinese Academy of Science; National Basic Research Program of China [2010CB832805]
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/14239
Collection理论物理所科研产出_SCI论文
Corresponding AuthorGuo, ZK (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Guo, ZK,Zhang, YZ,Guo, ZK . Uncorrelated estimates of the primordial power spectrum[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2011(11):32.
APA Guo, ZK,Zhang, YZ,&Guo, ZK .(2011).Uncorrelated estimates of the primordial power spectrum.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(11),32.
MLA Guo, ZK,et al."Uncorrelated estimates of the primordial power spectrum".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .11(2011):32.
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