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arXiv 0810.1816cond-mat.stat-mech
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Levy航班越障特性的解析计算问题

The problem of analytical calculation of barrier crossing characteristics for Levy flights

A. A. Dubkov, A. La Cognata, B. Spagnolo

摘要:

利用后向分数阶Fokker-Planck方程研究了Levy噪声存在下的势垒穿越事件。在简要回顾了最近的结果与不同的方法的时间特性的障碍交叉,我们推导出一个一般的微分方程计算非线性弛豫时间。我们得到了自由Levy飞行的非线性弛豫时间的解析表达式和立方势的非线性弛豫时间的求积封闭表达式。

英文摘要:

By using the backward fractional Fokker-Planck equation we investigate the barrier crossing event in the presence of Levy noise. After shortly review recent results obtained with different approaches on the time characteristics of the barrier crossing, we derive a general differential equation useful to calculate the nonlinear relaxation time. We obtain analytically the nonlinear relaxation time for free Levy flights and a closed expression in quadrature of the same characteristics for cubic potential.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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