KnowraFaddeev–Popov ghostLinked fromLinked fromThe 2 pages that link to Faddeev–Popov ghost, each with the reason it gives.All 2Broader topic 2Yang–Mills theoryBroader topic: They enter calculations that quantize Yang–Mills fields using gauge fixing.Gauge fixingBroader topic: Ghost fields encode the determinant generated by gauge fixing non-Abelian theories.