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arXiv 2307.09030cond-mat.stat-mechmath-phmath.MPmath.PR
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统计力学中某些大涨落问题的惠瑟姆方法

Whitham Approach to Certain Large Fluctuation Problems in Statistical Mechanics

Eldad Bettelheim

AI总结:

本文揭示了统计力学宏观涨落理论的强非线性(惠瑟姆)极限与逆散射方法之间的联系,证明该极限下逆散射问题可用黎曼–希尔伯特问题的最速下降法求解,从而为大偏差问题的精确求解提供新途径。

摘要:

我们展示了某些统计模型的宏观涨落理论的强非线性极限(也称为无色散极限或惠瑟姆极限)与逆散射方法之间的关系。我们证明,在强非线性极限下,逆散射问题可以利用相关黎曼–希尔伯特问题的最速下降法来求解。建立这一联系的重要性在于,强非线性极限下的方程往往可以通过简单手段精确求解,而这一联系则提供了一个可以求解逆散射问题的极限,从而可能有助于特定大偏差问题的精确求解。

英文摘要:

We show the relationship between the strongly non-linear limit (also termed the dispersionless or the Whitham limit) of the macroscopic fluctuation theory of certain statistical models and the inverse scattering method. We show that in the strongly non-linear limit the inverse scattering problem can be solved using the steepest descent method of the associated Riemann--Hilbert problem. The importance of establishing this connection, is that the equations in the strongly non-linear limit can often be solved exactly by simple means, the connection then provides a limit in which one can solve the inverse scattering problem, thus aiding potentially the exact solution of a particular large deviation problem.

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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