中国物理B ›› 2008, Vol. 17 ›› Issue (8): 2824-2828.doi: 10.1088/1674-1056/17/8/013

• GENERAL • 上一篇    下一篇

Could one single dichotomous noise cause resonant activation for exit time over potential barrier?

李静辉   

  1. Faculty of Science, Ningbo University, Ningbo 315211, China
  • 收稿日期:2007-10-22 修回日期:2007-11-20 出版日期:2008-08-20 发布日期:2008-08-20
  • 基金资助:
    Project supported by the Scientific Research Foundation (SRF) for the Returned Overseas Chinese Scholars (ROCS), State Education Ministry (SEM), and by K. C. Wong Magna Fund in Ningbo University.

Could one single dichotomous noise cause resonant activation for exit time over potential barrier?

Li Jing-Hui(李静辉)†   

  1. Faculty of Science, Ningbo University, Ningbo 315211, China
  • Received:2007-10-22 Revised:2007-11-20 Online:2008-08-20 Published:2008-08-20
  • Supported by:
    Project supported by the Scientific Research Foundation (SRF) for the Returned Overseas Chinese Scholars (ROCS), State Education Ministry (SEM), and by K. C. Wong Magna Fund in Ningbo University.

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摘要： This paper studies the mean first passage time (or exit time, or escape time) over the non-fluctuating potential barrier for a system driven only by a dichotomous noise. It finds that the dichotomous noise can make the particles escape over the potential barrier, in some circumstances; but in other circumstances, it can not. In the case that the particles escape over the potential barrier, a resonant activation phenomenon for the mean first passage time over the potential barrier is obtained.

Abstract: This paper studies the mean first passage time (or exit time, or escape time) over the non-fluctuating potential barrier for a system driven only by a dichotomous noise. It finds that the dichotomous noise can make the particles escape over the potential barrier, in some circumstances; but in other circumstances, it can not. In the case that the particles escape over the potential barrier, a resonant activation phenomenon for the mean first passage time over the potential barrier is obtained.

Key words: Resonant activation, mean first passage time, dichotomous noise

中图分类号:  (Noise)

  • 05.40.Ca
05.40.Jc (Brownian motion)