Imprints of the anisotropic inflation on the cosmic microwave background
Imprints of the anisotropic inflation on the cosmic microwave background
复制标题
DOI：
10.1111/j.1745-3933.2011.01010.x
复制
发表时间：
2010-11
影响因子：
--
通讯作者：
Masa-aki Watanabe;S. Kanno;J. Soda
中科院分区：
文献类型：
--
作者：
Masa-aki Watanabe;S. Kanno;J. Soda
我们研究了各向异性暴胀对CMB温度涨落和偏振的影响。统计各向异性不仅源于曲率和张量微扰的方向依赖性，而且源于曲率和张量微扰之间的互相关以及张量微扰的线性极化。我们发现非对角TB和EB谱以及对角和非对角TT、EE、BB和TE谱都是由各向异性暴胀引起的。我们强调，由互相关引起的非对角谱可能是各向异性膨胀的特征信号。
We study the imprints of the anisotropic inflation on the CMB temperature fluctuations and polarizations. The statistical anisotropy stems not only from the direction dependence of curvature and tensor perturbations, but also from the cross-correlation between curvature and tensor perturbations, and the linear polarization of tensor perturbations. We show that off-diagonal TB and EB spectra as well as on- and off-diagonal TT, EE, BB and TE spectra are induced from the anisotropic inflation. We emphasize that the off-diagonal spectra induced by the cross-correlation could be a characteristic signature of the anisotropic inflation.