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Quadrupole-octopole alignment of CMB related to the primordial power spectrum with dipolar modulation in anisotropic spacetime
Chang Z(常哲); Li X(李昕); Wang S(王赛); Chang, Z; Li, X; Wang, S
2015
发表期刊CHINESE PHYSICS C
卷号39期号:5页码:55101
通讯作者常哲 ; 李昕 ; 王赛
文章类型Article
摘要The WMAP and Planck observations show that the quadrupole and octopole orientations of the CMB might align with each other. We reveal that the quadrupole-octopole alignment is a natural implication of the primordial power spectrum in an anisotropic spacetime. The primordial power spectrum is presented with a dipolar modulation. We obtain the privileged plane by employing the "power tensor" technique. At this plane, there is maximum correlation between quadrupole and octopole. The probability for the alignment is much larger than that in the isotropic universe. We find that this model would lead to deviations from the statistical isotropy only for low-e multipoles.
关键词CMB mode alignment anisotropic inflation Finsler geometry
学科领域Physics
DOI10.1088/1674-1137/39/5/055101
收录类别SCI ; CA
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000354004300009
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被引频次:8[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/311005/228534
专题理论物理室
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Chang Z,Li X,Wang S,et al. Quadrupole-octopole alignment of CMB related to the primordial power spectrum with dipolar modulation in anisotropic spacetime[J]. CHINESE PHYSICS C,2015,39(5):55101.
APA 常哲,李昕,王赛,Chang, Z,Li, X,&Wang, S.(2015).Quadrupole-octopole alignment of CMB related to the primordial power spectrum with dipolar modulation in anisotropic spacetime.CHINESE PHYSICS C,39(5),55101.
MLA 常哲,et al."Quadrupole-octopole alignment of CMB related to the primordial power spectrum with dipolar modulation in anisotropic spacetime".CHINESE PHYSICS C 39.5(2015):55101.
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