Cosmological perturbations for an inflaton field coupled to radiation
  Within the framework of the interacting fluid formalism, we provide the
numerical solution to the Boltzmann equation describing the evolution of an
inflaton field coupled to radiation. We study the behavior of the system during
the slow-roll regime, in the case in which an additional stochastic source term
is included in the set of equations, and we recover the expression for the
cosmological perturbations previously obtained in the Warm inflation scenarios.
