Scalar-tensor mixing from icosahedral inflation
arXiv:2011.04687 · doi:10.1088/1475-7516/2021/04/074
Abstract
We study the mixed scalar-tensor two-point function in icosahedral inflation. Within the regime of validity of the effective field theory, this has to be perturbatively small; in particular, much smaller than the scalar spectrum. However, it can be much bigger that the tensor spectrum itself. We discuss observational implications for the CMB temperature-polarization spectrum.
References in corpus (13)
- Non-Gaussian features of primordial fluctuations in single field inflationary models
- An All-Sky Analysis of Polarization in the Microwave Background
- Inflationary Universe with Anisotropic Hair
- The Atacama Cosmology Telescope: A Measurement of the Cosmic Microwave Background Power Spectra at 98 and 150 GHz
- Solid Inflation
- Scalar-Scalar, Scalar-Tensor, and Tensor-Tensor Correlators from Anisotropic Inflation
- Imprints of anisotropic inflation on the cosmic microwave background
- The Atacama Cosmology Telescope: Constraints on Cosmic Birefringence
- CMB Bispectrum from Primordial Scalar, Vector and Tensor non-Gaussianities
- Parity-violating and anisotropic correlations in pseudoscalar inflation
- Analytic formulae of the CMB bispectra generated from non-Gaussianity in the tensor and vector perturbations
- Planck 2018 constraints on anisotropic birefringence and its cross-correlation with CMB anisotropy
- Platonic solids back in the sky: Icosahedral inflation