Nonthermal leptogenesis via cosmological gravitational particle production is tested by inflationary gravitational waves
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.
Authors
- Evan McDonough (ORCID: https://orcid.org/0000-0002-2130-3903)
- Leah G. Jenks (ORCID: https://orcid.org/0000-0002-9212-2034)
- Tammi Chowdhury (ORCID: https://orcid.org/0009-0007-3110-9075)
- Edward W. Kolb (ORCID: https://orcid.org/0000-0002-7148-4052)
- Andrew J. Long (ORCID: https://orcid.org/0000-0003-0985-5809)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2026-11-03
- DOI
- https://doi.org/10.1103/mzv7-7v5q
- Primary Topic
- Cosmology and Gravitation Theories
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- Johns Hopkins University
- Research Manitoba
- Natural Sciences and Engineering Research Council of Canada