Speaker
Description
Inflationary scenarios motivated by high-energy physics generically contain a plethora of degrees of freedom beyond the primordial curvature perturbation. The latter interacts in a simple way with what we name inflationary flavor eigenstates, which differ in general from freely propagating inflationary mass eigenstates. We show that the mixing between these misaligned states results in a new striking behavior in the three-point function of the primordial curvature perturbation. Indeed, depending on the mass spectrum but also on the mixing angles of the theory, its squeezed limit displays either modulated oscillations, a broken power law, or a transition from oscillations to a power law, thus offering a detailed cosmic spectroscopy of the particle content of inflation.
Based on: https://arxiv.org/pdf/2112.05710.pdf
