GUT Baryogenesis after Preheating

Details GUT Baryogenesis after Preheating GUT Baryogenesis after Preheating

1996-06-07

arxiv.org/abs/hep-ph/9606260v2

Phys.Rev.Lett.77:4290-4293,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, version to be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.77.4290

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 non-thermally in a preheating phase after inflation. We show that baryogenesis is possible for an inflaton masses of order 10^{13} GeV and a GUT Higgs boson mass of order 10^{14} GeV, thus solving many drawbacks facing GUT baryogenesis in the old reheating scenario.

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