Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-06-28
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, LaTeX2e
Scientific paper
I point out an unexpected relation between the BV (Batalin-Vilkovisky) and the BFV (Batalin-Fradkin-Vilkovisky) formulations of the same pure gauge (topological) theory. The nonminimal sector in the BV formulation of the topological theory allows one to construct the Poisson bracket and the BRST charge on some Lagrangian submanifold of the BV configuration space; this Lagrangian submanifold can be identified with the phase space of the BFV formulation of the same theory in the minimal sector of ghost variables. The BFV Poisson bracket is induced by a natural even Poisson bracket on the stationary surface of the master action, while the BRST charge originates from the BV gauge-fixed BRST transformation defined on a gauge-fixing surface. The inverse construction allows one to arrive at the BV formulation of the topological theory starting with the BFV formulation. This correspondence gives an intriguing geometrical interpretation of the nonminimal variables and clarifies the relation between the Hamiltonian and Lagrangian quantization of gauge theories. This is an extended version of the talk given at the QFTHEP-99 workshop in Moscow, May 27 -June 2, 1999.
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