%0 Journal Article
%T Parametric resonance in dissipative field dynamics
%A Ramos
%A Rudnei O.
%A Vartuli
%A R. A. S.
%J Brazilian Journal of Physics
%D 2008
%I Scientific Electronic Library Online
%R 10.1590/S0103-97332008000400026
%X the effects of bosonic trilinear interactions are investigated in the process of resonant particle production. we study a generic model of three fields with trilinear couplings. in this model a scalar field ¦Õ can excite a heavy bosonic field ¦Ö which then decays into a light bosonic field ¦Ò. we study the consequences of dissipation and stochastic noise terms in the field equations of motion that result from a calculation in nonequlibrium quantum field theory and determine the effects of these terms for the phenomenon of parametric resonance, which can occur e.g. during preheating after inflation.
%K parametric resonance
%K particle production
%K nonequlibrium dynamics.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-97332008000400026&lng=en&nrm=iso&tlng=en