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In this note we consider the gauge field equation of motion for thedimensional reduction of the (2,0) tensor multiplet on singular circlefibrations. The fibrations are characterized by the corresponding U(1) actionhaving a codimension four fixed point locus W. Along W, the dimensionalreduction of the (2,0) receives a modification described by a WZW model. Weconsider the emergence of the additional degrees of freedom through thetopological term in the action, which in addition to the gauge field strengthinvolves the U(1) connection of the space-time fibration. We also consider theTaub-NUT space as a simple example of a singular fibration, and in particularconsider spherically symmetric solutions for the field strength.

(2,0) theory on Taub-NUT: A note on WZW models on singular fibrations