Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-06-11
J.Phys. A37 (2004) 7359-7380
Physics
High Energy Physics
High Energy Physics - Theory
21 pages, no figures, to appear in Jnl. Phys. A
Scientific paper
10.1088/0305-4470/37/29/011
The status of the usual statement of the Fradkin-Vilkovisky theorem, claiming complete independence of the Batalin-Fradkin-Vilkovisky path integral on the gauge fixing "fermion" even within a nonperturbative context, is critically reassessed. Basic, but subtle reasons why this statement cannot apply as such in a nonperturbative quantisation of gauge invariant theories are clearly identified. A criterion for admissibility within a general class of gauge fixing conditions is provided for a large ensemble of simple gauge invariant systems. This criterion confirms the conclusions of previous counter-examples to the usual statement of the Fradkin-Vilkovisky theorem.
Govaerts Jan
Scholtz Frederik G.
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