Moduli Oscillation Induced by Reheating
High Energy Physics - Phenomenology
2019-03-18 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We estimate the abundance of the coherent oscillation of moduli, which linearly couple to matter fields through higher dimensional operators. During the (p)reheating after inflation, matter particles are efficiently produced and it can affect the moduli potential in a non-adiabatic way, which results in the coherent oscillation of the moduli. In particular, such effects are most important at the very beginning of the (p)reheating. It is found that this production mechanism is so efficient that a successful evolution of the universe can be threatened even if the moduli mass is larger than the Hubble scale.
Cite
@article{arxiv.1811.05002,
title = {Moduli Oscillation Induced by Reheating},
author = {Daisuke Hagihara and Koichi Hamaguchi and Kazunori Nakayama},
journal= {arXiv preprint arXiv:1811.05002},
year = {2019}
}
Comments
26 pages, 5 figures, 1 table; v2: version published in JCAP