Generating the curvature perturbation with instant preheating
High Energy Physics - Theory
2010-10-27 v5 Astrophysics
High Energy Physics - Phenomenology
Abstract
A new mechanism for generating the curvature perturbation at the end of inflaton has been investigated. The dominant contribution to the primordial curvature perturbation may be generated during the period of instant preheating. The mechanism converts isocurvature perturbation related to a light field into curvature perturbation, where the ``light field'' is not the inflaton field. This mechanism is important in inflationary models where kinetic energy is significant at the end of inflaton. We show how one can apply this mechanism to various brane inflationary models.
Cite
@article{arxiv.hep-th/0610232,
title = {Generating the curvature perturbation with instant preheating},
author = {Tomohiro Matsuda},
journal= {arXiv preprint arXiv:hep-th/0610232},
year = {2010}
}
Comments
17 pages, 1 figure, To appear in JCAP