Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 9, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2014/09/012
Keywords
inflation; cosmological perturbation theory; gravitational waves and CMBR polarization
Funding
- European Research Council (ERC STG) [279617]
- Stephen Hawking Advanced Fellowship
- Science and Technology Facilities Council [ST/L000636/1] Funding Source: researchfish
- STFC [ST/L000636/1] Funding Source: UKRI
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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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