Scale-invariant Perturbations from Chaotic Inflation
Astrophysics
2009-11-13 v1 High Energy Physics - Phenomenology
Abstract
Vacuum fluctuations in the inflaton field driving chaotic inflation with a quadratic potential give a red spectrum of primordial density perturbations, n=0.97. However angular fluctuations in an O(N)-symmetric quadratic potential have a very nearly scale-invariant spectrum, n=0.9998. We investigate the possibility that these isocurvature field perturbations could give the dominant contribution to the primordial density perturbation after inflation.
Cite
@article{arxiv.astro-ph/0512195,
title = {Scale-invariant Perturbations from Chaotic Inflation},
author = {Christian T. Byrnes and David Wands},
journal= {arXiv preprint arXiv:astro-ph/0512195},
year = {2009}
}
Comments
10 pages, LaTeX with RevTex, no figures