1.
Phys Rev Lett
; 111(5): 051301, 2013 Aug 02.
Artículo
en Inglés
| MEDLINE
| ID: mdl-23952382
RESUMEN
We present the first (3+1)-dimensional numerical simulations of scalar fields with nonminimal kinetic terms. As an example, we examine the existence and stability of preheating in the presence of a Dirac-Born-Infeld inflaton coupled to a canonical matter field. The simulations represent the full nonlinear theory in the presence of an expanding universe. We show that parametric resonance in the matter field along with self-resonance in the inflaton repopulate the universe with matter particles as efficiently as in traditional preheating.