Can Non-Adiabatic Perturbations Arise After Single-Field Inflation?
arXiv:astro-ph/0401313 · doi:10.1103/PhysRevD.70.043541
Abstract
It is shown that non-adiabatic cosmological perturbations cannot arise during the period of reheating following inflation with a single scalar inflaton field.
7 pages, Latex, references added, discussion improved