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Non-Abelian Conversion and Quantization of Non-scalar Second-Class Constraints | | Igor Batalin
; Maxim Grigoriev
; Simon Lyakhovich
; | | Date: |
13 Dec 2004 | | Journal: | J.Math.Phys. 46 (2005) 072301 | | Subject: | High Energy Physics - Theory; Quantum Algebra; Symplectic Geometry; Differential Geometry | hep-th math.DG math.QA math.SG | | Abstract: | We propose a general method for deformation quantization of any second-class constrained system on a symplectic manifold. The constraints determining an arbitrary constraint surface are in general defined only locally and can be components of a section of a non-trivial vector bundle over the phase-space manifold. The covariance of the construction with respect to the change of the constraint basis is provided by introducing a connection in the ``constraint bundle’’, which becomes a key ingredient of the conversion procedure for the non-scalar constraints. Unlike in the case of scalar second-class constraints, no Abelian conversion is possible in general. Within the BRST framework, a systematic procedure is worked out for converting non-scalar second-class constraints into non-Abelian first-class ones. The BRST-extended system is quantized, yielding an explicitly covariant quantization of the original system. An important feature of second-class systems with non-scalar constraints is that the appropriately generalized Dirac bracket satisfies the Jacobi identity only on the constraint surface. At the quantum level, this results in a weakly associative star-product on the phase space. | | Source: | arXiv, hep-th/0501097 | | Services: | Forum | Review | PDF | Favorites | |
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