"0550-3213" . . "14310" . . . "Reducible Gauge Algebra of BRST-Invariant Constraints"@en . . . "44"^^ . "Nuclear Physics B" . "[2B3BD59B2E16]" . . "We show that it is possible to formulate the most general first-class gauge algebra of the operator formalism by only using BRST-invariant constraints. In particular, we extend a previous construction for irreducible gauge algebras to the reducible case. The gauge algebra induces two nilpotent, Grassmann-odd, mutually anticommuting BRST operators that bear structural similarities with BRST/anti-BRST theories but with shifted ghost number assignments. In both cases we show how the extended BRST algebra can be encoded into an operator master equation. A unitarizing Hamiltonian that respects the two BRST symmetries is constructed with the help of a gauge-fixing Boson. Abelian reducible theories are shown explicitly in full detail, while non-Abelian theories are worked out for the lowest reducibility stages and ghost momentum ranks." . "BFV-BRST Quantization; Extended BRST Symmetry; Reducible Gauge algebra; Antibracket."@en . "771" . "Reducible Gauge Algebra of BRST-Invariant Constraints"@en . "Batalin, Igor" . "Reducible Gauge Algebra of BRST-Invariant Constraints" . "000246918200003" . "Z(MSM0021622409)" . "RIV/00216224:14310/07:00021845!RIV10-MSM-14310___" . "RIV/00216224:14310/07:00021845" . "2"^^ . . . "446817" . "2"^^ . "2007" . . . "Reducible Gauge Algebra of BRST-Invariant Constraints" . . "We show that it is possible to formulate the most general first-class gauge algebra of the operator formalism by only using BRST-invariant constraints. In particular, we extend a previous construction for irreducible gauge algebras to the reducible case. The gauge algebra induces two nilpotent, Grassmann-odd, mutually anticommuting BRST operators that bear structural similarities with BRST/anti-BRST theories but with shifted ghost number assignments. In both cases we show how the extended BRST algebra can be encoded into an operator master equation. A unitarizing Hamiltonian that respects the two BRST symmetries is constructed with the help of a gauge-fixing Boson. Abelian reducible theories are shown explicitly in full detail, while non-Abelian theories are worked out for the lowest reducibility stages and ghost momentum ranks."@en . . . . . "NL - Nizozemsko" . "Batalin, Igor" . . "Bering Larsen, Klaus" .