G Date 2003 Class. Quantum Grav. 20 303 doi:10.1088/0264-9381/20/2/304
G Date
Show affiliationsInspired by the discrete evolution implied by the recent work on loop quantum cosmology, we obtain a discrete time description of usual quantum mechanics viewing it as a constrained system. This description, obtained without any approximation or explicit discretization, mimics features of the discrete time evolution of loop quantum cosmology. We discuss the continuum limit, physical inner product and matrix elements of physical observables to bring out various issues regarding the viability of a discrete evolution. We also point out how a continuous time could emerge without appealing to any continuum limit.
Issue 2 (21 January 2003)
Received 23 October 2002
Published 20 December 2002
G Date 2003 Class. Quantum Grav. 20 303
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