中国物理B ›› 2011, Vol. 20 ›› Issue (12): 120306-120306.doi: 10.1088/1674-1056/20/12/120306

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Classical behaviour of various variables in an open Bose–Hubbard system

Nikola Burić   

  1. Institute of Physics, University of Belgrade, P O BOX 68, 11000 Belgrade, Serbia
  • 收稿日期:2011-02-25 修回日期:2011-07-06 出版日期:2011-12-15 发布日期:2011-12-15
  • 基金资助:
    Project supported in part by the Ministry of Education and Science of the Republic of Serbia (Grant No. ON171017).

Classical behaviour of various variables in an open Bose–Hubbard system

Nikola Burić   

  1. Institute of Physics, University of Belgrade, P O BOX 68, 11000 Belgrade, Serbia
  • Received:2011-02-25 Revised:2011-07-06 Online:2011-12-15 Published:2011-12-15
  • Supported by:
    Project supported in part by the Ministry of Education and Science of the Republic of Serbia (Grant No. ON171017).

摘要: Quantum dispersions of various sets of dynamical variables of an open Bose-Hubbard system in a classical limit are studied. To this end, an open system is described in terms of stochastic evolution of its quantum pure states. It is shown that the class of variables that display classical behaviour crucially depends on the type of noise. This is relevant in the mean-field approximation of open Bose-Hubbard dynamics.

关键词: quantum trajectories, decoherence, classical limit

Abstract: Quantum dispersions of various sets of dynamical variables of an open Bose-Hubbard system in a classical limit are studied. To this end, an open system is described in terms of stochastic evolution of its quantum pure states. It is shown that the class of variables that display classical behaviour crucially depends on the type of noise. This is relevant in the mean-field approximation of open Bose-Hubbard dynamics.

Key words: quantum trajectories, decoherence, classical limit

中图分类号:  (Decoherence; open systems; quantum statistical methods)

  • 03.65.Yz
05.45.Mt (Quantum chaos; semiclassical methods)