Alejandro Corichi et al 2003 Class. Quantum Grav. 20 L83 doi:10.1088/0264-9381/20/7/101
Alejandro Corichi, Jerónimo Cortez and Hernando Quevedo
Show affiliationsThe problem of defining and constructing representations of the canonical commutation relations can be systematically approached via the technique of algebraic quantization. In particular, when the phase space of the system is linear and finite dimensional, the 'vertical polarization' provides an unambiguous quantization. For infinite-dimensional field theory systems, where the Stone–von Neumann theorem fails to be valid, even the simplest representation, the Schrödinger functional picture has some non-trivial subtleties. In this letter we consider the quantization of a real free scalar field—where the Fock quantization is well understood—on an arbitrary background and show that the representation from the most natural application of the algebraic quantization approach is not, in general, unitarily equivalent to the corresponding Schrödinger–Fock quantization. We comment on the possible implications of this result for field quantization.
81T70 Quantization in field theory; cohomological methods (See also 58D29)
Issue 7 (7 April 2003)
Received 10 December 2002, in final form 14 January 2003
Published 12 March 2003
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