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Double inflation and the low CMB quadrupole
Feng B(冯波); Zhang XM(张新民); Feng, B; Zhang, XM
2003
发表期刊PHYSICS LETTERS B
卷号570期号:3-4页码:#REF!
通讯作者Feng, B (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China.
文章类型Article
摘要Recent released WMAP data show a low value of quadrupole in the CMB temperature fluctuations, which confirms the early observations by COBE. In this Letter we consider a model of two inflatons with different masses, V(01, 02) V (phi(1),phi(2)) = 1/2m(1)(2)phi(1)(2)+1/2m(2)(2)phi(2)(2), m(1) > m(2) and study its effects on CMB of suppressing the primordial power spectrum P(k) at small k. Inflation is driven in this model firstly by the heavier inflaton phi(1), then the lighter field phi(2). But there is no interruption in between. We numerically calculate the scalar and tensor power spectra with mode by mode integrations, then fit the model to WMAP temperature correlations TT and the TE temperature-polarization spectra. Our results show that with m(1) similar to 10(14) GeV and m(2) similar to 10(13) GeV, this model solves the problems of flatness, etc. and the CMB quadrupole predicted can be much lower than the standard power-law ACDM model. (C) 2003 Elsevier B.V. All rights reserved.
关键词cosmology cosmic microwave background double inflation
学科领域Physics
DOI10.1016/j.physletb.2003.07.065
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000185417400002
引用统计
被引频次:94[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226496
专题理论物理室
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GB/T 7714
Feng B,Zhang XM,Feng, B,et al. Double inflation and the low CMB quadrupole[J]. PHYSICS LETTERS B,2003,570(3-4):#REF!.
APA 冯波,张新民,Feng, B,&Zhang, XM.(2003).Double inflation and the low CMB quadrupole.PHYSICS LETTERS B,570(3-4),#REF!.
MLA 冯波,et al."Double inflation and the low CMB quadrupole".PHYSICS LETTERS B 570.3-4(2003):#REF!.
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