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Paper   IPM / Astronomy / 13654
School of Astronomy
  Title:   Statistical Anisotropies in Gravitational Waves in Solid Inflation
1.  M. Akhshik
2.  R. Emami
3.  H. Firouzjahi
4.  Y. Wang
  Status:   To Appear
  Journal: JCAP
  Vol.:  2014
  Pages:   30
  Supported by:  IPM
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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