paper

Curvature Perturbations from Broken Symmetries

arXiv:astro-ph/0410546 · doi:10.1103/PhysRevD.71.043513

Abstract

We present a new general mechanism to generate curvature perturbations after the end of the slow-roll phase of inflation. Our model is based on the simple assumption that the potential driving inflation is characterized by an underlying global symmetry which is slightly broken.

13 pages, 4 figures

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