2020/11/09 by Alberto Nicolis, Guanhao Sun · 3 citations
Physics and Astronomy · #Cosmic microwave background #Cosmology and Gravitation Theories #Field (mathematics) #Fluctuation spectrum #Galaxies: Formation, Evolution, Phenomena #Icosahedral symmetry #Inflation (cosmology) #Mixing (physics) #Pulsars and Gravitational Waves Research #Scalar (mathematics) #Scalar field #hep-th
paper · pdf · doi:10.1088/1475-7516/2021/04/074
published in Journal of Cosmology and Astroparticle Physics 2021(04), 074 (Institute of Physics)
arxiv created 2020/11/09 · openalex created_date 2020/11/23 · openalex publication_date 2021/04/01 · arxiv updated 2021/05/05 · openalex updated_date 2026/08/05
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.