“Twisted BRST symmetry in gauge theories on κ-Minkowski””

Algebraic properties of the BRST symmetry associated to the twisted gauge symmetry occurring in the κ-Poincaré invariant gauge theories on the κ-Minkowski space are investigated. We find that the BRST operation associated to the gauge invariance of the action functional can be continuously deformed together with its corresponding Leibniz rule, into a nilpotent twisted BRST operation, leading to a twisted BRST symmetry algebra which may be viewed as a noncommutative analog of the usual Yang-Mills BRST algebra.