Destructive interference of dualities

The soldering mechanism has been shown to represent the quantum interference effect between self-and anti-self-dual aspects of a given symmetry. This mechanism was used to show that the massive mode of the 2D Schwinger model results from the constructive interference between the right and the left massless modes of chiral Schwinger models. Similarly, the topologically massive modes resulting from the bosonization of 3D massive Thining models of opposite mass signatures are fused into thr two massive modes of the 3D Proca model, thanks to the interference of dualities characteristic of the soldering mechanism. In this work, we show that the field theoretical analogue of destructive quantum mechanical interference may also be represented by the soldering mechanism. This phenomenon is illustrated by the fusion of two (diffeomorphism) invariant self-dual scalars described by right and left chiral-WZW actions, producing a Hull nonmover field. After fusion, right and left moving modes disappear from the spectrum, displaying the claimed (destructive) interference of dualities.