In this note I study preheating after multi-field inflation to assess the feasibility of parametric resonance. An intuitive argument for the suppression of resonances due to dephasing of fields in generic multi-field models is presented. This effect is absent in effective single field models, rendering them inappropriate for the study of preheating. © 2009 Elsevier B.V. All rights reserved.
Battefeld, D. (2009). Preheating after Multi-Field Inflation. Nuclear Physics B - Proceedings Supplements, 192–193, 126–127. https://doi.org/10.1016/j.nuclphysbps.2009.07.050