Off-shell nilpotent (anti-)BRST symmetries for a free particle system on   a toric geometry: superfield formalism
  We derive the off-shell nilpotent as well as absolutely anticommuting (anti-)BRST symmetry transformations, within the framework of superfield approach to BRST formalism, for a free particle system constrained to move on a torus. We also construct the most appropriate gauge-fixed Lagrangian which respects the (anti-)BRST symmetry transformations. 
R. Kumar
hep-th