More on core instabilities of magnetic monopoles

TL;DR

This paper investigates the core instability of 't Hooft Polyakov monopoles, revealing that such instabilities are common in models with charged Higgs particles and discussing a new 'split core' configuration.

Contribution

The paper provides new numerical results on monopole core instability and introduces the concept of a 'split core' configuration, expanding understanding of monopole behavior.

Findings

Core instability leads to a transition from spherical to toroidal cores.

Core instability is a generic feature in models with charged Higgs particles.

Introduction of the 'split core' configuration as a new possible monopole structure.

Abstract

In this paper we present new results on the core instability of the 't Hooft Polyakov monopoles we reported on before. This instability, where the spherical core decays in a toroidal one, typically occurs in models in which charge conjugation is gauged. In this paper we also discuss a third conceivable configuration denoted as ``split core'', which brings us to some details of the numerical methods we employed. We argue that a core instability of 't Hooft Polyakov type monopoles is quite a generic feature of models with charged Higgs particles.