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arXiv 1402.6895cond-mat.stat-mech
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关于Stratonovich微积分的解释

On the Interpretation of Stratonovich Calculus

W. Moon, J. S. Wettlaufer

摘要:

伊托-斯特拉托诺维奇困境是从斯特拉托诺维奇微积分的解释的角度重新使用散粒噪声。在观测位移的长时间尺度上,主要问题是如何处理随机噪声的有限/零自相关。前(非零)噪声自相关结构使用中间点选择方案(Stratonovich演算的基础)保留了正常链式规则,而伊藤方法的瞬时自相关结构则没有。通过考虑噪声相关在相对于可观测的总位移时间非常短的时间尺度上的有限衰减,我们建议推广Wong和Zakai(1965)的积分泰勒展开准则,以证明Stratonovich方法的有效性。

英文摘要:

The Ito-Stratonovich dilemma is revisited from the perspective of the interpretation of Stratonovich calculus using shot noise. Over the long time scales of the displacement of an observable, the principal issue is how to deal with finite/zero autocorrelation of the stochastic noise. The former (non-zero) noise autocorrelation structure preserves the normal chain rule using a mid-point selection scheme, which is the basis Stratonovich calculus, whereas the instantaneous autocorrelation structure of Ito's approach does not. By considering the finite decay of the noise correlations on time scales very short relative to the overall displacement times of the observable, we suggest a generalization of the integral Taylor expansion criterion of Wong and Zakai (1965) for the validity of the Stratonovich approach.

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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