The Exact WKB analysis for asymmetric scalar preheating
High Energy Physics - Theory
2023-02-01 v3 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
Abstract
Using the exact WKB analysis of the higher-order differential equations, we analyze the asymmetry in dynamical particle production of a complex scalar field. The solution requires the Stokes phenomena of the fourth-order differential equation. We found that the interference of different types of the Stokes phenomena causes matter-antimatter asymmetry. We also showed a specific example where asymmetry is forbidden in the exact calculation, but a false asymmetry appears in the perturbative expansion.
Cite
@article{arxiv.2203.04497,
title = {The Exact WKB analysis for asymmetric scalar preheating},
author = {Seishi Enomoto and Tomohiro Matsuda},
journal= {arXiv preprint arXiv:2203.04497},
year = {2023}
}
Comments
38 pages, 7 fugures, style changed, refined arguments