Abelian projected SU(2) Yang–Mills action for renormalisation group flows

The dual Meissner effect scenario of confinement is discussed by studying the low energy regime of SU(2) Yang–Mills in a maximal Abelian gauge. The Abelian projected effective action is computed perturbatively. This serves as an input for a study of the non-perturbative regime, which is undertaken using exact renormalisation group methods. It is argued that the effective action derived here contains the relevant degrees of freedom for confinement if ultraviolet irrelevant vertices are retained.