Generating the curvature perturbation at the end of inflation

Abstract

The dominant contribution to the primordial curvature perturbation may be generated at the end of inflation. Taking the end of inflation to be sudden, formulas are presented for the spectrum, spectral tilt and non-gaussianity. They are evaluated for a minimal extension of the original hybrid inflation model.

Comments: 5 pages. v3: as it will appear in JCAP