Modulated inflation from kinetic term
High Energy Physics - Theory
2008-11-26 v3 Astrophysics
High Energy Physics - Phenomenology
Abstract
We study modulated inflation from kinetic term. Using the Mukhanov-Sasaki variable, it is possible to determine how mixing induced by the kinetic term feeds the curvature perturbation with the isocurvature perturbation. We show explicitly that the analytic result obtained from the evolution of the Mukhanov-Sasaki variable is consistent with the -formula. From our results, we find analytic conditions for the modulated fluctuation and the non-Gaussianity parameter.
Cite
@article{arxiv.0804.3268,
title = {Modulated inflation from kinetic term},
author = {Tomohiro Matsuda},
journal= {arXiv preprint arXiv:0804.3268},
year = {2008}
}
Comments
15 pages, 1 figure, Accepted for publication in JCAP