Instability of Higgs Vacuum via String Cloud
High Energy Physics - Theory
2020-01-08 v2 High Energy Physics - Phenomenology
Abstract
We study the instability of the Higgs vacuum caused by a cloud of strings. By catalysis, the decay rate of the vacuum is highly enhanced and, when the energy density of the cloud is larger than the critical value, a semi-classical vacuum decay occurs. We also discuss the relation between the string cloud and observational constraints on the cosmic strings from the viewpoint of the catalysis, which are converted into bounds on the parameters of the Higgs potential.
Keywords
Cite
@article{arxiv.1910.02435,
title = {Instability of Higgs Vacuum via String Cloud},
author = {Issei Koga and Sachiko Kuroyanagi and Yutaka Ookouchi},
journal= {arXiv preprint arXiv:1910.02435},
year = {2020}
}
Comments
13 pages, 4 figures, v2: refs and appendix added, typos fixed, fig 2, 3 modified. to appear in Phys. Lett. B