Curvature perturbation from symmetry breaking the end of inflation

Alabidi, L. and Lyth, D. H. (2006) Curvature perturbation from symmetry breaking the end of inflation. Journal of Cosmology and Astroparticle Physics. ISSN 1475-7516

Abstract

We consider a two-field hybrid inflation model, in which the curvature perturbation is predominantly generated at the end of inflation. By finely tuning the coupling of the fields to the waterfall we find that we can get a measurable amount of non-Gaussianity.