Measuring primordial anisotropic correlators with CMB spectral distortions

被引：16
|
作者：
Shiraishi, Maresuke [1 ,2 ,3 ]
Liguori, Michele [2 ,3 ]
Bartolo, Nicola [2 ,3 ]
Matarrese, Sabino [2 ,3 ,4 ]
机构：
[1] Univ Tokyo, UTIAS, Kavli Inst Phys & Math Universe Kavli IPMU, WPI, Chiba 2778583, Japan
[2] Univ Padua, Dipartimento Fis & Astron G Galilei, I-35131 Padua, Italy
[3] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
[4] Ist Nazl Fis Nucl, Gran Sasso Sci Inst, I-67100 Laquila, Italy
来源：
PHYSICAL REVIEW D | 2015年 / 92卷 / 08期
关键词：
MICROWAVE BACKGROUND SPECTRUM; HEMISPHERICAL POWER ASYMMETRY; RADIATION; WMAP; DISSIPATION; CONSTRAINTS; EVOLUTION; ISOTROPY; WAVES;
D O I：
10.1103/PhysRevD.92.083502
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We show that inflationary models with broken rotational invariance generate testable off-diagonal signatures in the correlation between the mu-type distortion and temperature fluctuations of the cosmic microwave background. More precisely, scenarios with a quadrupolar bispectrum asymmetry, usually generated by fluctuations of primordial vector fields, produce a nonvanishing mu-T correlation when vertical bar l(1) - l(2)vertical bar = 2. Since spectral distortions are sensitive to primordial fluctuations up to very small scales, a cosmic variance limited spectral distortion experiment can detect such effects with a high signal-to-noise ratio.
引用
收藏
页数：9
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