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题名: Probing the primordial Universe from the low-multipole CMB data
作者: Cheng, C ;  Huang, QG
刊名: PHYSICS LETTERS B
出版日期: 2014
卷号: 738, 期号:-, 页码:140-143
关键词: MICROWAVE BACKGROUND ANISOTROPIES ;  INFLATIONARY UNIVERSE ;  GRAVITATIONAL-WAVES ;  COSMOLOGICAL MODEL ;  ANGULAR VARIATIONS ;  PERTURBATIONS ;  FLATNESS ;  HORIZON
学科分类: Physics
DOI: 10.1016/j.physletb.2014.09.036
通讯作者: Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Cheng, Cheng
英文摘要: 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.
资助者: Chinese Academy of Science; NSFC [10821504, 11322545, 11335012]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000344624900021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15574
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Cheng, C,Huang, QG. Probing the primordial Universe from the low-multipole CMB data[J]. PHYSICS LETTERS B,2014,738(-):140-143.
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