Statistical Anisotropies in Gravitational Waves in Solid Inflation
arXiv:1405.4179 · doi:10.1088/1475-7516/2014/09/012
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.
30 pages, 11 figures
References in corpus (15)
- Primordial Non-Gaussianities from Inflation Models
- Inflationary Universe with Anisotropic Hair
- Theory of cosmological perturbations in an anisotropic universe
- ACTPol: A polarization-sensitive receiver for the Atacama Cosmology Telescope
- The Nature of Primordial Fluctuations from Anisotropic Inflation
- Scalar-Scalar, Scalar-Tensor, and Tensor-Tensor Correlators from Anisotropic Inflation
- Predictions from an anisotropic inflationary era
- SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope
- Imprints of anisotropic inflation on the cosmic microwave background
- Anisotropic Inflation from Charged Scalar Fields
- The Cosmology Large Angular Scale Surveyor (CLASS): 40 GHz optical design
- On the non-Gaussian correlation of the primordial curvature perturbation with vector fields
- The TT, TB, EB and BB correlations in anisotropic inflation
- Scalar-tensor correlations and large-scale power suppression
- Scalar-Tensor Anti-Cross-Correlation does not Help to Reconcile the Tension between BICEP2 and Planck