The fields are the -valued connection form A, -valued scalar field with fermionic statistics, b and c and a -valued scalar field with bosonic statistics B. c deals with the gauge transformations whereas b and B deal with the gauge fixings. There actually are some subtleties associated with the gauge fixing due to Gribov ambiguities but they will not be covered here.
A -valued connection form, a scalar field with fermionic statistics, b and c, and a -valued scalar field with bosonic statistics B.  c deals with gauge transformations, while b and B deal with gauge fixings. There are some subtleties associated with gauge fixing due to Gribov ambiguities, but these will not be discussed here.