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arXiv 2301.07063math.AP
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波动动力学方程的推导:全范围标度律

Derivation of the wave kinetic equation: full range of scaling laws

Yu Deng, Zaher Hani

摘要:

本文完成了在arXiv:2104.11204和arXiv:2110.04565中开始的程序,旨在为非线性薛定谔(NLS)方程的波动力学理论提供一个完整的严格证明。在这里,我们涵盖了一个任意的周期性矩形框上的NLS的标度律的全部范围,并推导出波动动力学方程的动力学时间的小倍数。证明是基于图形扩展和深入分析所产生的费曼图。这项工作的主要新颖性有三个方面:(1)我们提出了一个强大的方法来识别任意大的“坏”图,阻碍费曼图扩展的收敛,(2)我们系统地发现这些大的“坏”图之间的复杂的取消,(3)我们提出了一个新的强大的算法来绑定所有剩余的图,并证明扩展的收敛性。这些成分是非常强大的,并构成了一个强大的新方法,在一般的数学研究费曼图。

英文摘要:

This paper completes the program started in arXiv:2104.11204 and arXiv:2110.04565 aiming at providing a full rigorous justification of the wave kinetic theory for the nonlinear Schrödinger (NLS) equation. Here, we cover the full range of scaling laws for the NLS on an arbitrary periodic rectangular box, and derive the wave kinetic equation up to small multiples of the kinetic time. The proof is based on a diagrammatic expansion and a deep analysis of the resulting Feynman diagrams. The main novelties of this work are three-fold: (1) we present a robust way to identify arbitrarily large "bad" diagrams which obstruct the convergence of the Feynman diagram expansion, (2) we systematically uncover intricate cancellations among these large "bad" diagrams, and (3) we present a new robust algorithm to bound all remaining diagrams and prove convergence of the expansion. These ingredients are highly robust, and constitute a powerful new approach in the geneal mathematical study of Feynman diagrams.

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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