Numerical investigation of highly excited magnetic monopoles in SU(2) Yang-Mills-Higgs theory

TL;DR

This paper presents a detailed numerical study of highly excited SU(2) magnetic monopoles in Yang-Mills-Higgs theory, revealing linear and nonlinear effects, energy dynamics, and spacetime behavior through advanced simulation techniques.

Contribution

It provides a comprehensive account of numerical methods and new insights into the dynamics of excited magnetic monopoles beyond previous preliminary studies.

Findings

Distinction between linear and nonlinear effects in monopole evolution

Analysis of energy transfer and balance in monopole dynamics

Spacetime dependence of physical variables in excited monopoles

Abstract

Preliminary results concerning the time evolution of strongly exited SU(2) Bogomolny-Prasad-Sommerfield (BPS) magnetic monopoles have been published in Phys. Rev. Lett. 92, 151801 (2004). The behavior of these dynamical magnetic monopoles was investigated by means of numerical simulations in the four dimensional Minkowski spacetime. The developed code incorporates both the techniques of conformal compactification and that of the hyperboloidal initial value problem. Our primary aim here is to provide a detailed account on the methods and results of the investigations reported in Phys. Rev. Lett. 92, 151801 (2004). In addition, some important new results, which go much beyond the scope of these early studies, are also presented. In particular, to be able to distinguish linear and non-linear effects, evolutions of monopoles deformed by various excitations, including both very small and extra large energy excitation, are investigated. In addition, a detailed account is provided on the spacetime dependence of the basic variables, as well as, that of the other physically significant dynamical qualities such as the energy and energy current densities, the radial and angular pressures and the magnetic charge density. A careful comprehensive study of the associated energy transfers and energy balances is also included.