Reheating as a surface effect

Enqvist, Kari and Kasuya, Shinta and Mazumdar, Anupam (2002) Reheating as a surface effect. Physical review letters, 89 (9): 091301. ISSN 1079-7114

Preview

PDF
PhysRevLett.89.091301.pdf - Published Version
Download (79kB)

Abstract

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 over production problem in inflationary models without fine tuning the Yukawa sector.