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arXiv 2206.03392math-phmath.APmath.MPmath.PR
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一维聚焦三次非线性薛定谔方程吉布斯测度的微观推导

A microscopic derivation of Gibbs measures for the 1D focusing cubic nonlinear Schrödinger equation

Andrew Rout, Vedran Sohinger

AI总结:

本文通过多体量子吉布斯态和微扰展开,在引入质量与粒子数截断的条件下,首次对一维环面上聚焦三次非线性薛定谔方程给出吉布斯测度的微观推导,并研究了时间相关关联函数。

摘要:

本文从多体量子吉布斯态出发,给出一维环面上聚焦三次非线性薛定谔方程吉布斯测度的微观推导。由于我们不对相互作用作任何正性假设,有必要在经典情形中引入质量截断,并在量子情形中引入重标度粒子数截断。我们的方法基于相互作用的微扰展开,与Fröhlich、Knowles、Schlein及第二作者先前的工作类似。由于截断的存在,所得级数具有无穷收敛半径。我们处理有界、可积以及delta函数相互作用势的情形,且不作任何符号假设。在此框架内,我们还研究了时间相关关联函数。这是聚焦区域中首个此类已知结果。

英文摘要:

In this paper, we give a microscopic derivation of Gibbs measures for the focusing cubic nonlinear Schrödinger equation on the one-dimensional torus from many-body quantum Gibbs states. Since we are not making any positivity assumptions on the interaction, it is necessary to introduce a truncation of the mass in the classical setting and of the rescaled particle number in the quantum setting. Our methods are based on a perturbative expansion of the interaction, similarly as in previous work of Fröhlich, Knowles, Schlein, and the second author. Due to the presence of the truncation, the obtained series have infinite radius of convergence. We treat the case of bounded, integrable, and delta function interaction potentials, without any sign assumptions. Within this framework, we also study time-dependent correlation functions. This is the first such known result in the focusing regime.

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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