Statistical Anisotropies in Gravitational Waves in Solid Inflation
Cosmology and Nongalactic Astrophysics
2015-06-19 v1 High Energy Physics - Theory
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.
Cite
@article{arxiv.1405.4179,
title = {Statistical Anisotropies in Gravitational Waves in Solid Inflation},
author = {Mohammad Akhshik and Razieh Emami and Hassan Firouzjahi and Yi Wang},
journal= {arXiv preprint arXiv:1405.4179},
year = {2015}
}
Comments
30 pages, 11 figures