Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-06-23
Phys.Rev.Lett.77:3716-3719,1996
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, no figures
Scientific paper
10.1103/PhysRevLett.77.3716
Fluctuations of scalar fields produced at the stage of preheating after inflation are so large that they can break supersymmetry much stronger than inflation itself. These fluctuations may lead to symmetry restoration along flat directions of the effective potential even in the theories where the usual high temperature corrections are exponentially suppressed. Our results show that nonthermal phase transitions after preheating may play a crucial role in the generation of the primordial baryon asymmetry by the Affleck-Dine mechanism. In particular, the baryon asymmetry may be generated at the very early stage of the evolution of the Universe, at the preheating era, and not when the Hubble parameter becomes of order the gravitino mass.
Anderson Greg W.
Linde Andrei
Riotto Antonio
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