Vv. Vladimirsky, Stabilization of a magnetized state of a vector non-Abelian field and models of a gluonic vacuum, PHYS ATOM N, 62(12), 1999, pp. 2064-2067
Rotationally invariant constant solutions with external currents are studie
d in SU(2) and SU(3) Yang-Mills theories. Additional terms in the Yang-Mill
s Lagrangian make it possible to remove the instability of these fields.