Reheating as a surface effect.
We describe a new mechanism for reheating the Universe through evaporation of a surface charge of a fragmented inflaton condensate. We show that for a range of Yukawa coupling of the inflaton to the matter sector evaporation gives rise to a much smaller reheat temperature compared to the standard perturbative decay. As a consequence, reheating through a surface effect could solve the gravitino and moduli overproduction problem in inflationary models without fine tuning the Yukawa sector.
Department of Physical Sciences, P.O. Box 64, FIN-00014, University of Helsinki, Finland.
Kari
K
Enqvist
Shinta
S
Kasuya
Anupam
A
Mazumdar