arXiv:2605.05304·v1·High Energy Physics — Phenomenology
Nonthermal leptogenesis via cosmological gravitational particle production is tested by inflationary gravitational waves
Tammi Chowdhury🇨🇦 · Leah Jenks🇺🇸 · Edward W. Kolb🇺🇸 · Andrew J. Long🇺🇸 · Evan McDonough🇨🇦
Abstract
We explore the coincidence of scales between cosmic inflation and right-handed neutrinos in seesaw models. We show that inflation models, which will be tested by next-generation CMB experiments, can produce right-handed neutrinos in sufficient abundance to explain the observed baryon asymmetry of the universe. The model can be tested by gravitational wave signatures from cosmic inflation and particle production.
Comments: 7 pages, 3 figures