Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-11-29
Annals Phys. 302 (2002) 2-21
Physics
High Energy Physics
High Energy Physics - Theory
RevTeX, 17 pages, detailed version of hep-th/0106250 and hep-th/0107064
Scientific paper
10.1006/aphy.2002.6305
Correspondence between BRST-BFV, Dirac and refined algebraic (group averaging, projection operator) approaches to quantize constrained systems is analyzed. For the closed-algebra case, it is shown that the component of the BFV wave function with maximal (minimal) number of ghosts and antighosts in the Schrodinger representation may be viewed as a wave function in the refined algebraic (Dirac) quantization approach. The Giulini-Marolf group averaging formula for the inner product in the refined algebraic quantization approach is obtained from the Batalin-Marnelius prescription for the BRST-BFV inner product which should be generally modified due to topological problems. The considered prescription for the correspondence of states is observed to be applicable to the open-algebra case. Refined algebraic quantization approach is generalized then to the case of nontrivial structure functions. A simple example is discussed. Correspondence of observables in different quantization methods is also investigated.
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