A Dynamical Solution to the Axion Domain Wall Problem
High Energy Physics - Phenomenology
2020-02-26 v1
Abstract
The domain wall problem and the isocurvature problem restrict possible combinations of axion models and inflation models. In this paper, we considered a new mechanism which solves those problems by dynamics of multiple scalar fields during/after inflation. The mechanism makes axion models with a non-trivial domain wall number compatible with inflation models with a large Hubble parameter, GeV. The mechanism also avoids the isocurvature problem. This mechanism increases the freedom of choice of combinations of axion models and inflation models.
Keywords
Cite
@article{arxiv.1909.01604,
title = {A Dynamical Solution to the Axion Domain Wall Problem},
author = {Masahiro Ibe and Shin Kobayashi and Motoo Suzuki and Tsutomu T. Yanagida},
journal= {arXiv preprint arXiv:1909.01604},
year = {2020}
}
Comments
27 pages, 4 figures