Inflaton Particles in Reheating
arXiv:hep-ph/0007043 · doi:10.1016/S0370-2693(02)01236-4
Abstract
In many theories of reheating starting from the classical spatially homogeneous inflaton field, its accompanying inhomogeneous part (which arises from primordial quantum fluctuations) is treated as a first order perturbation. We examine some consequences of treating it non-perturbatively in a model where a first order treatment is invalid. In particular we consider effects on the long-wavelength curvature parameter relevant to the cosmic microwave background fluctuations.
14 pages, 4 figures;code corrected,figures and some conclusions changed