Non-Gaussianity in the inflating curvaton
High Energy Physics - Phenomenology
2013-06-26 v3 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
Inflating curvaton can create curvature perturbation when the curvaton density is slowly varying. Using the delta-N formalism, we discuss the evolution of the curvature perturbation during curvaton inflation and find analytic formulation of the non-Gaussianity parameter. We first consider the inflating curvaton with sufficiently long inflationary expansion. Then we compare the result with short curvaton inflation.
Cite
@article{arxiv.1210.7118,
title = {Non-Gaussianity in the inflating curvaton},
author = {Seishi Enomoto and Kazunori Kohri and Tomohiro Matsuda},
journal= {arXiv preprint arXiv:1210.7118},
year = {2013}
}
Comments
13 pages, 2 figures, title changed, added calculational details, readable, errors corrected, to appear in PRD