http://arxiv.org/abs/2112.05710
We show that generic inflationary scenarios, featuring any number of scalar fluctuations beyond the curvature perturbation, that we dub inflationary flavor eigenstates for their particular interactions with the latter, and that mix with the freely propagating inflationary mass eigenstates, may be probed via a cosmic spectroscopy. Indeed, the three-point function of the primordial curvature perturbation displays, in the squeezed limit, a new striking behavior that depends not only on the mass spectrum but also on the mixing angles of the theory: modulated oscillations, a broken power law, or a transition from oscillations to a power law.
L. Pinol, S. Aoki, S. Renaux-Petel, et. al.
Mon, 13 Dec 21
11/70
Comments: 7 pages, 4 figures
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