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Statistical anisotropies in gravitational waves in solid inflation

Akhshik, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1088/1475-7516/2014/09/012
  3. Abstract:
  4. 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
  5. Keywords:
  6. Cosmological perturbation theory ; Gravitational waves and CMBR polarization ; Ination
  7. Source: Journal of Cosmology and Astroparticle Physics ; Vol. 2014,Issue. 9 , 2014 ; ISSN: 14054179
  8. URL: http://iopscience.iop.org./1475-7516/2014/09/012