Gluodynamics in External Field: A Test of the Dual Superconductor Picture

TL;DR

This paper investigates how external electromagnetic fields influence gluodynamics using the dual superconductor model, revealing phase transitions and complex phase structures in SU(2) and SU(3) gauge theories.

Contribution

It demonstrates the existence of a deconfining phase transition at zero temperature in SU(2) and predicts a rich phase structure in SU(3) under external fields, testing the dual superconductor approach.

Findings

SU(2) gluodynamics exhibits a deconfining phase transition at a critical external field.

SU(3) gauge theory shows confinement, asymmetric confinement, and deconfinement phases.

Results support the validity of the dual superconductor model in external fields.

Abstract

We study gluodynamics in an external Abelian electromagnetic field within the dual superconductor approach. We show that the SU(2) gluodynamics should possess a deconfining phase transition at zero temperature at certain value of the external field. A dual superconductor model for the SU(3) gauge theory in external field predicts a rich phase structure containing confinement, asymmetric confinement and deconfinement phases. These results can be used to check the validity of the dual superconductor description of gluodynamics in external fields. We also discuss the gauge-independence of the obtained results.