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Dirac versus Reduced Quantization of the Poincaré Symmetry in Scalar Electrodynamics | | R.J. Epp
; G. Kunstatter
; | | Date: |
31 Mar 1994 | | Journal: | Phys.Rev. D51 (1995) 781-799 | | Subject: | gr-qc | | Affiliation: | Physics Department, University of Winnipeg, Winnipeg, Manitoba Canada), G. Kunstatter (Physics Department, University of Manitoba Winnipeg, Manitoba, Canada, and Winnipeg Institute for Theoretical Physics, Physics Department, University of Winnipeg, Wi | | Abstract: | The generators of the Poincaré symmetry of scalar electrodynamics are quantized in the functional Schrödinger representation. We show that the factor ordering which corresponds to (minimal) Dirac quantization preserves the Poincaré algebra, but (minimal) reduced quantization does not. In the latter, there is a van Hove anomaly in the boost-boost commutator, which we evaluate explicitly to lowest order in a heat kernel expansion using zeta function regularization. We illuminate the crucial role played by the gauge orbit volume element in the analysis. Our results demonstrate that preservation of extra symmetries at the quantum level is sometimes a useful criterion to select between inequivalent, but nevertheless self-consistent, quantization schemes. | | Source: | arXiv, gr-qc/9403065 | | Services: | Forum | Review | PDF | Favorites | |
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