Light Scalars and the Generation of Density Perturbations During Preheating or Inflaton Decay
Astrophysics
2010-04-05 v3 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
Reheating after inflation can occur through inflaton decay or efficient parametric resonant production of particles from the oscillation of the inflaton. If the particles produced interact with scalars that were light during inflation, then significant super-horizon density perturbations are generated during this era. These perturbations can be highly non-Gaussian.
Cite
@article{arxiv.astro-ph/0412007,
title = {Light Scalars and the Generation of Density Perturbations During Preheating or Inflaton Decay},
author = {Lotty Ackerman and Christian W. Bauer and Michael L. Graesser and Mark B. Wise},
journal= {arXiv preprint arXiv:astro-ph/0412007},
year = {2010}
}
Comments
6 pages, 4 figures. Clarifying discussion added. Conclusions unchanged