Non-Gaussianity and gravitational wave background in curvaton with a double well potential
Cosmology and Nongalactic Astrophysics
2010-12-13 v1 High Energy Physics - Phenomenology
Abstract
We study the density perturbation by a curvaton with a double well potential and estimate the nonlinear parameters for non-Gaussianity and the amplitude of gravitational wave background generated during inflation. The predicted nonlinear parameters strongly depend on the size of a curvaton self-coupling constant as well as the reheating temperature after inflation for a given initial amplitude of the curvaton. The difference from usual massive self-interacting curvaton is also emphasized.
Keywords
Cite
@article{arxiv.1008.0079,
title = {Non-Gaussianity and gravitational wave background in curvaton with a double well potential},
author = {Ki-Young Choi and Osamu Seto},
journal= {arXiv preprint arXiv:1008.0079},
year = {2010}
}
Comments
23 pages, 6 figures