Wess-Zumino terms for the deformed Skyrme model - art. no. 025205

A formulation of the Skyrme model as an embedded gauge theory with the cons traint deformed away from the spherical geometry is proposed. The gauge-inv ariant formulation is obtained by first generalizing the intrinsic geometry of the model and then converting the constraint to first class through an iterative Wess-Zumino procedure. The gauge-invariant model is quantized via the Dirac method for a first-class system. A perturbative calculation prov ides new free parameters related to the deformation that improve the energy spectrum obtained in earlier approaches.