计算物理 ›› 2002, Vol. 19 ›› Issue (2): 103-107.

• 论文 • 上一篇    下一篇

关于状态分立系统的改进的Metropolis方法

吴金闪1,2, 包景东1,2, 杨展如1,2   

  1. 1. 北京师范大学物理系, 北京 100875;
    2. 北京师范大学理论物理研究所, 北京 100875
  • 收稿日期:2000-07-20 修回日期:2001-01-20 出版日期:2002-03-25 发布日期:2002-03-25
  • 作者简介:吴金闪(1977-),男,浙江兰溪,硕士生,从事理论物理及统计物理方面的研究.
  • 基金资助:
    国家自然科学基金(19775008);教育部博士基金(1999002707)资助项目

AN IMPROVED METROPOLIS APPROACH TO THE DISCRETE-STATE SYSTEM

WU Jin-shan1,2, BAO Jing-dong1,2, YANG Zhan-ru1,2   

  1. 1. Department of Physics, Beijing Normal University, Beijing 100875, P R China;
    2. Institute of Theoretical Physics, Beijing Normal University, Beijing 100875, P R China
  • Received:2000-07-20 Revised:2001-01-20 Online:2002-03-25 Published:2002-03-25

摘要: 对状态分立系统的平衡态统计问题给出了一个改进的Metropolis方法,并在伊辛模型上与传统方法进行了对比,得到了一致的结果,效率提高了约25%.针对伊辛模型的抽样过程给出了其马尔科夫过程所对应的Master方程.将所提出的方法应用于伊辛模型,相当于对其Master方程进行了模拟.作为推广,一大类临界动力学模型的Master方程都可以用本方法进行模拟,以用于其暂态过程的研究.

关键词: 改进Metropolis方法, 伊辛模型, Monte Carlo方法

Abstract: An improved Metropolis approach is proposed especially to solve the equilibrium problem of a discrete-state system, used to deal with the Ising model and proven to be well consistent with the traditional Metropolis method. But it's more efficient as it reduces 25 percent of the simulating time. Especially for the Ising model, the Master equation is generalized in the simulation. This kind of Master equation of critical kinetics and its' transient phenomena can effectively be studied by using the modified Metropolis method presented here.

Key words: improved Metropolis approach, Ising model, Monte Carlo

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