Entropy in quantum ratchet for a delta-kicked model

Lei Chen, Chuan-Feng Li, Ming Gong and Guang-Can Guo

Physica A: Statistical Mechanics and its Applications, 2009, vol. 388, issue 20, 4328-4332

Abstract: We investigate the evolution of Shannon entropy in quantum ratchet effect for a delta-kicked model, where a particle with initial momentum zero is periodically kicked by an asymmetric potential. It is shown that the evolution of Shannon entropy of the particle can remarkably reflect whether quantum resonance emerges and gives rise to ratchet current or not. Furthermore, for different kinds of quantum resonances, low-order or high-order quantum resonances, the evolutions of the entropy are quite different.

Keywords: Shannon entropy; Quantum ratchet; Delta-kicked model (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:388:y:2009:i:20:p:4328-4332

DOI: 10.1016/j.physa.2009.07.025

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