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arXiv · 1405.4179

Statistical Anisotropies in Gravitational Waves in Solid Inflation

Mohammad Akhshik·Razieh Emami·Hassan Firouzjahi·Yi Wang
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Abstract

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.

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Mohammad Akhshik, Razieh Emami, Hassan Firouzjahi, Yi Wang. 2014-05-16. Statistical Anisotropies in Gravitational Waves in Solid Inflation. https://doi.org/10.1088/1475-7516%2F2014%2F09%2F012

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