Quantum decoherence and classical correlations of the harmonic oscillator in the Lindblad theory

Details Quantum decoherence and classical correlations of the harmonic oscillator in the Lindblad theory Quantum decoherence and classical correlations of the harmonic oscillator in the Lindblad theory

2007-05-15

arxiv.org/abs/0705.2202v1

Physica A 373, 298 (2007)

Physics

Quantum Physics

24 pages, 8 figures

Scientific paper

10.1016/j.physa.2006.04.065

In the framework of the Lindblad theory for open quantum systems we determine the degree of quantum decoherence and classical correlations of a harmonic oscillator interacting with a thermal bath. The transition from quantum to classical behaviour of the considered system is analyzed and it is shown that the classicality takes place during a finite interval of time. We calculate also the decoherence time and show that it has the same scale as the time after which statistical fluctuations become comparable with quantum fluctuations.

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