ITP OpenIR  > 理论物理所2014年知识产出
Probing the primordial Universe from the low-multipole CMB data
Cheng, C; Huang, QG; Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
2014
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号738期号:-页码:140-143
摘要Since 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.
部门归属[Cheng, Cheng
关键词Microwave Background Anisotropies Inflationary Universe Gravitational-waves Cosmological Model Angular Variations Perturbations Flatness Horizon
学科领域Physics
资助者Chinese 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]
DOI10.1016/j.physletb.2014.09.036
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收录类别SCI
语种英语
资助者Chinese 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]
WOS记录号WOS:000344624900021
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15574
专题理论物理所2014年知识产出
通讯作者Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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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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