High-frequency Graviton from Inflaton Oscillation
Cosmology and Nongalactic Astrophysics
2020-06-18 v1 High Energy Physics - Phenomenology
Abstract
We point out that there is a high-frequency tail of the stochastic inflationary gravitational wave background that scales as with frequency . This contribution comes from the graviton vacuum fluctuation amplified by the inflaton coherent oscillation during the reheating stage. It contains information on inflaton properties such as the inflaton mass as well as the thermal history of the early Universe.
Keywords
Cite
@article{arxiv.2006.09972,
title = {High-frequency Graviton from Inflaton Oscillation},
author = {Yohei Ema and Ryusuke Jinno and Kazunori Nakayama},
journal= {arXiv preprint arXiv:2006.09972},
year = {2020}
}
Comments
13 pages, 2 figures