Year: 1996
Type: article
Abstract: At the end of inflation the Universe is frozen in a near zero-entropy state with energy density in a coherent scalar field and must be ``defrosted'' to produce the observed entropy and baryon number. We propose that the baryon asymmetry is generated by the decay of supermassive grand-unified-theory (GUT) bosons produced nonthermally in a preheating phase after inflation. We show that baryogenesis is possible for an inflaton mass of order ${10}^{13}\mathrm{GeV}$ and a GUT Higgs boson mass of order ${10}^{14}\mathrm{GeV}$, thus solving many drawbacks facing GUT baryogenesis in the old reheating scenario.
Source: Physical Review Letters
Authors: Edward W. Kolb, Andrei Linde, Antonio Riotto
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1484565538