Post-Inflationary Reheating
arXiv:hep-ph/0003141 · doi:10.1103/PhysRevD.62.063512 10.1103/PhysRevD.65.069901
Abstract
We study a model for reheating that has been much investigated for parametric resonance, having a quartic interaction of the scalar inflaton with another scalar field. Attention is particularly on the quantum excitations of the inflaton field and the metric perturbation with a smooth transition from quantum to classical stochastic states, followed through from a specific inflation model to a state including a relativistic fluid. The scalar fields enter non-perturbatively but the metric enters perturbatively, and the validity of this latter is assessed. In this model our work seems to point the large scale curvature parameter changing.
25 pages, 6 figures. Coding error(misprint) corrected:figures and some conclusions changed