Abstract (EN):
In this work, one shows that a generalized nonminimal coupling between geometry and matter is compatible with Starobinsky inflation and leads to a successful process of preheating, a reheating scenario based on the production of massive particles via parametric resonance. The model naturally extends the usual preheating mechanism, which resorts to an ad hoc scalar curvature-dependent mass term for a scalar field chi, and also encompasses a previously studied preheating channel based upon a nonstandard kinetic term.
Language:
English
Type (Professor's evaluation):
Scientific
Contact:
orfeu.bertolami@fc.up.pt; pedro.frazao@ist.utl.pt; paramos@ist.edu
No. of pages:
12