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Statistical Anisotropies in Gravitational Waves in Solid Inflation

Authors Akhshik, Mohammad
Emami, Razieh
Firouzjahi, Hassan
Wang, Yi View this author's profile
Issue Date 2014
Source Journal of Cosmology and Astroparticle Physics , v. 2014, (9), September 2014, article number 012
Summary Solid inflation can support a long period of anisotropic inflation. We calculate the statistical anisotropies in the scalar and tensor power spectra and their cross-correlation in anisotropic solid inflation. The tensor-scalar cross-correlation can either be positive or negative, which impacts the statistical anisotropies of the TT and TB spectra in CMB map more significantly compared with the tensor self-correlation. The tensor power spectrum contains potentially comparable contributions from quadrupole and octopole angular patterns, which is different from the power spectra of scalar, the cross-correlation or the scalar bispectrum, where the quadrupole type statistical anisotropy dominates over octopole.
ISSN 14757516
Language English
Format Article
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