计算物理 ›› 1999, Vol. 16 ›› Issue (5): 481-488.

• 论文 • 上一篇    下一篇

关联噪声驱动系统的一阶数值模拟算法

付海翔, 曹力, 吴大进   

  1. 华中理工大学物理系, 武汉 430074
  • 收稿日期:1998-04-14 修回日期:1999-02-05 出版日期:1999-09-25 发布日期:1999-09-25
  • 作者简介:付海翔,男,25,硕士
  • 基金资助:
    国家自然科学基金(19675014)资助

A numerical algorithm of first-order for systems driven by correlated noises

Fu Haixiang, Cao Li, Wu Dajin   

  1. Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
  • Received:1998-04-14 Revised:1999-02-05 Online:1999-09-25 Published:1999-09-25

摘要: 在某些条件下共同驱动随机系统的乘法噪声和加法噪声可以相互关联,相关噪声驱动的随机微分系统具有许多独特的性质,而数值模拟是研究这类系统一种强有力的方法。研究相关噪声驱动系统的数值模拟算法,分别就白噪声情形和色噪声情形作了讨论,得到了一种一阶数值模拟算法,并与已有文献的解析结果进行了对比。

关键词: 相关噪声, Langevin方程, 数值模拟

Abstract: A first-order algorithm of numerical solution is developed for systems simultaneously driven by correlated additive noise and multiplicative noise,both in the case that the multi-plicative noise is of white and of colored noise.As an example,the steady state probability distribution of bistable model is computed.Results verifies that this algorithm is applicable.

Key words: correlated noise, Langevin equation, numerical simulation

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