A more accurate analytic calculation of the spectrum of cosmological perturbations produced during inflation
arXiv:gr-qc/9302019 · doi:10.1016/0370-2693(93)90379-V
Abstract
Formulae are derived for the spectra of scalar curvature perturbations and gravitational waves produced during inflation, special cases of which include power law inflation, natural inflation in the small angle approximation and inflation in the slow roll approximation.
9 pages, KUNS 1176 and LANCS TH 93 01