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Cheng, C; Huang, QG; Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Probing the primordial Universe from the low-multipole CMB data
Source PublicationPHYSICS LETTERS B
Language英语
KeywordMicrowave Background Anisotropies Inflationary Universe Gravitational-waves Cosmological Model Angular Variations Perturbations Flatness Horizon
AbstractSince the temperature fluctuations in the cosmic microwave background (CMB) on large-angular scales probe length scales that were super-horizon sized at photon decoupling and hence insensitive to microphysical processes, the low-multipole CMB data are supposed to be a good probe to the physics of the primordial Universe. In this letter we will constrain the cosmological parameters in the base Lambda CDM model with tensor perturbations by only using the low-multipole CMB data, including Background Imaging of Cosmic Extragalactic Polarization (B2), Planck data released in 2013 (P13) and Wilkinson Microwaves Anisotropy Probe 9-year data (W9). We find that either sign of the index of the tensor power spectrum is compatible with the data, but a blue-tilted power spectrum of scalar perturbations on large scales is preferred at around 2 sigma confidence level. (C) 2014 The Authors. Published by Elsevier B. V.
2014
ISSN0370-2693
Volume738Issue:-Pages:140-143
Subject AreaPhysics
DOI10.1016/j.physletb.2014.09.036
Indexed BySCI
Funding OrganizationChinese Academy of Science; NSFC [10821504, 11322545, 11335012] ; Chinese Academy of Science; NSFC [10821504, 11322545, 11335012] ; Chinese Academy of Science; NSFC [10821504, 11322545, 11335012] ; Chinese Academy of Science; NSFC [10821504, 11322545, 11335012]
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15574
Collection理论物理所科研产出_SCI论文
Corresponding AuthorHuang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Cheng, C,Huang, QG,Huang, QG . Probing the primordial Universe from the low-multipole CMB data[J]. PHYSICS LETTERS B,2014,738(-):140-143.
APA Cheng, C,Huang, QG,&Huang, QG .(2014).Probing the primordial Universe from the low-multipole CMB data.PHYSICS LETTERS B,738(-),140-143.
MLA Cheng, C,et al."Probing the primordial Universe from the low-multipole CMB data".PHYSICS LETTERS B 738.-(2014):140-143.
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