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The Klauder–Daubechies construction of the phase-space path integral and the harmonic oscillator

Jan Govaerts1,2,5, Calvin Matondo Bwayi3 and Olivier Mattelaer1,4

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The canonical operator quantization formulation corresponding to the Klauder–Daubechies construction of the phase-space path integral is considered. This formulation is explicitly applied and solved in the case of the harmonic oscillator, thereby illustrating in a manner complementary to Klauder and Daubechies' original work some of the promising features offered by their construction of a quantum dynamics. The Klauder–Daubechies functional integral involves a regularization parameter eventually taken to vanish, which defines a new physical time scale. When extrapolated to the field theory context, besides providing a new regularization of short distance divergences, keeping a finite value for that time scale offers some tantalizing prospects when it comes to strong gravitational quantum systems.


PACS

03.65.Ge Solutions of wave equations: bound states

03.65.Fd Algebraic methods

03.65.Db Functional analytical methods

02.30.Rz Integral equations

MSC

81Q05 Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other quantum-mechanical equations

81R15 Operator algebra methods (See also 46Lxx, 81T05)

81S40 Path integrals (See also 58D30)

81S10 Geometry and quantization, symplectic methods (See also 53D50)

Subjects

Mathematical physics

Quantum information and quantum mechanics

Dates

Issue 44 (6 November 2009)

Received 6 August 2009

Published 16 October 2009



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