Reheating process in the $R^2$ inflationary model with the baryogenesis scenario
Abstract
Post-inflationary evolution and (re)heating of the viable inflationary model, the one, is made more realistic by including the leptogenesis scenario into it. For this purpose, right-handed Majorana neutrinos with a large mass are added to the matter sector of the Standard Model to explain the neutrino oscillation experiments and the baryon asymmetry of the Universe. We have found parameters that characterize this model: non-minimal coupling of the Higgs field , the mass of the right-handed Majorana neutrino and the Yukawa coupling matrix components for the right-handed Majorana neutrino. We have analyzed the effect of these parameters on the reheating process and leptogenesis in this model and how they affect the resultant physical quantities: spectral parameters of primordial perturbations and baryon asymmetry.
Cite
@article{arxiv.2305.14273,
title = {Reheating process in the $R^2$ inflationary model with the baryogenesis scenario},
author = {Hyun Jeong and Kohei Kamada and Alexei A. Starobinsky and Jun'ichi Yokoyama},
journal= {arXiv preprint arXiv:2305.14273},
year = {2023}
}
Comments
Presentation expanded, the case of hierarchical Yukawa matrix is considered, and previous conclusions unchanged (29 pages, 12 figures)