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.
Primordial power spectrum versus extension parameters beyond the standard model
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordObservations Cosmological Interpretation Wmap Data Anisotropy Telescope Reconstruction Oscillations Inflation Universe
AbstractWe reconstruct the shape of the primordial power spectrum of curvature perturbations in extended cosmological models, including addition of massive neutrinos, extra relativistic species, or varying primordial helium abundance, from the latest cosmic microwave background data from the Wilkinson Microwave Anisotropy Probe, the Atacama Cosmology Telescope, and the South Pole Telescope. We find that a scale-invariant primordial spectrum is disfavored by the data at 95% confidence level even in the presence of massive neutrinos, however it can lie within the 95% confidence region if the effective number of relativistic species or the primordial helium abundance is allowed to vary freely. The constraints on the extension parameters from WMAP7 + ACT + H-0 + BAO are the total mass of neutrinos Sigma m(p) < 0.48 eV (95% C.L.), the effective number of relativistic species N-eff 4.50 +/- 0.81, and the primordial helium abundance Y-p 0.303 +/- 0.075. The constraints from WMAP7 + SPT + H-0 + BAO are Sigma m(p) < 0.45 eV (95% C.L.), N-eff 3.86 +/- 0.63, and Y-p 0.277 +/- 0.050.
2012
ISSN1550-7998
Volume85Issue:10Pages:103519
Subject AreaPhysics
Indexed BySCI
Funding OrganizationChinese Academy of Science; NSFC [11175225]; National Basic Research Program of China [2010CB832805] ; Chinese Academy of Science; NSFC [11175225]; National Basic Research Program of China [2010CB832805] ; Chinese Academy of Science; NSFC [11175225]; National Basic Research Program of China [2010CB832805] ; Chinese Academy of Science; NSFC [11175225]; National Basic Research Program of China [2010CB832805]
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15100
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 . Primordial power spectrum versus extension parameters beyond the standard model[J]. PHYSICAL REVIEW D,2012,85(10):103519.
APA Guo, ZK,Zhang, YZ,&Guo, ZK .(2012).Primordial power spectrum versus extension parameters beyond the standard model.PHYSICAL REVIEW D,85(10),103519.
MLA Guo, ZK,et al."Primordial power spectrum versus extension parameters beyond the standard model".PHYSICAL REVIEW D 85.10(2012):103519.
Files in This Item:
File Name/Size DocType Version Access License
Primordial power spe(212KB) 开放获取LicenseApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Guo, ZK]'s Articles
[Zhang, YZ]'s Articles
[Guo, ZK (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Guo, ZK]'s Articles
[Zhang, YZ]'s Articles
[Guo, ZK (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Guo, ZK]'s Articles
[Zhang, YZ]'s Articles
[Guo, ZK (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.