We study the statics of quasi-abelian quark and antiquark source charges in the approximation in which leading logarithm radiative corrections are retained in the gauge gluon effective action functional. We show that the partial differential equation for the flux function is of degenerating elliptic type, leading to flux confinement within a free boundary which is a characteristic. The static potential increases linearly for large source separations, with a logarithmic subdominant term. © 1982.
Adler, S. L., & Piran, T. (1982). Flux confinement in the leading logarithm model. Physics Letters B, 113(5), 405–410. https://doi.org/10.1016/0370-2693(82)90774-2