Abstract
The dynamics of the inflaton field is studied in the context of its interaction with bosonic and fermionic fields modeled by a minimal SUSY like model. Our results are based on the observation that in typical multifield inflation models there are parameter regions for which nonlinear and nonperturbative effects can become important and that can lead to important changes in the dynamics of the inflaton field. In those parameter regions feasible to inflation, it is possible the emergence of effective strong dissipative effects that alone can sustain inflation long enough and with observational effects on density perturbations.
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