Fractional revivals of coherence in quantum mechanical oscillators

J.C. Ross and H.W. Capel

Physica A: Statistical Mechanics and its Applications, 2000, vol. 287, issue 1, 217-258

Abstract: A case study is made of the delocalisation and revival dynamics of a continuously driven quantum pendulum in integrable and near integrable regimes, utilising the Husimi phase-space distribution function, and an entropy function which measures the degree of localisation. The numerical results can be well understood in terms of a simple model description based on a quasi-energy representation. Two important time-scales of the evolution are derived, and the model description appears to remain highly accurate in the region of classical KAM-tori, even in the driven case.

Keywords: Quantum pendulum; Husimi function; Coherence; Fractional revivals (search for similar items in EconPapers)
Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:287:y:2000:i:1:p:217-258

DOI: 10.1016/S0378-4371(00)00222-3

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