An approach to solve Slavnov-Taylor identities in nonsupersymmetric   non-Abelian gauge theories
  We present a way to solve Slavnov--Taylor identities in a general nonsupersymmetric theory. The solution can be parametrized by a limited number of functions of spacetime coordinates, so that all the effective fields are dressed by these functions via integral convolution. The solution restricts the ghost part of the effective action and gives predictions for the physical part of the effective action. 
Igor Kondrashuk, Gorazd Cvetic, and Ivan Schmidt