Quantizing the damped harmonic oscillator

Details Quantizing the damped harmonic oscillator Quantizing the damped harmonic oscillator

2004-10-11

arxiv.org/abs/quant-ph/0410078v1

J.Phys. A38 (2005) 2021-2028

Physics

Quantum Physics

4 pages, no figures

Scientific paper

10.1088/0305-4470/38/9/012

We consider the Fermi quantization of the classical damped harmonic oscillator (dho). In past work on the subject, authors double the phase space of the dho in order to close the system at each moment in time. For an infinite-dimensional phase space, this method requires one to construct a representation of the CAR algebra for each time. We show that unitary dilation of the contraction semigroup governing the dynamics of the system is a logical extension of the doubling procedure, and it allows one to avoid the mathematical difficulties encountered with the previous method.

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