1996/06/30 by Edward W. Kolb, Andrei Linde, Antonio Riotto · 5 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevlett.77.4290
published as Phys.Rev.Lett.77:4290-4293,1996 · 4 pages, version to be published in Phys. Rev. Lett
arxiv created 1996/10/24 · openalex publication_date 1996/11/18 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 1013GeV and a GUT Higgs boson mass of order 1014GeV, thus solving many drawbacks facing GUT baryogenesis in the old reheating scenario.