%0 Journal Article %T Inflaton Particles in Reheating %A A. B. Henriques %A R. G. Moorhouse %J Physics %D 2000 %I arXiv %R 10.1016/S0370-2693(02)01236-4 %X 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. %U http://arxiv.org/abs/hep-ph/0007043v4