arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2602.03063math.APmath-phmath.MP
收藏

通过半经典孤子集合研究中间长期波方程的小分散极限

The Small-Dispersion Limit of the Intermediate Long Wave Equation via Semiclassical Soliton Ensembles

School of Data, Mathematics and Statistical Sciences, University of Central Florida(中佛罗里达大学数据、数学与统计科学学院);Department of Physics, University of Michigan(密歇根大学物理系)

Matthew Dominique Mitchell

AI总结:

本文通过半经典孤子集合研究中间长期波方程的小分散极限,证明了解在不同时间尺度下的收敛性及与无粘Burgers方程的关联。

摘要:

我们研究中间长期波(ILW)方程的小分散极限,特别关注一类良好的初始条件$u_0$,其中解中的孤子数量无界增加。首先,我们对ILW直接散射问题进行形式性的WKB式分析,生成近似的本征值和规范常数。然后我们利用这些来定义一个修改的散射数据集,并严格分析相关的反散射问题。主要结果包括证明解在$t=0$时对原初始条件$u_0$的$L^2$收敛性,并在$0 < t < t_\mathrm{c}$时对无粘 Burgers 方程的关联解的收敛性,其中$t_\mathrm{c}$是梯度奇点时间。

英文摘要:

We study the small dispersion limit of the intermediate long wave (ILW) equation, specifically on a class of well-behaved initial conditions $u_0$ where the number of solitons in the solution increases without bound. First, we conduct a formal WKB-style analysis on the ILW direct scattering problem, generating approximate eigenvalues and norming constants. We then use this to define a modified set of scattering data and rigorously analyze the associated inverse scattering problem. The main results include demonstrating $L^2$-convergence of the solution at $t = 0$ to the original initial condition $u_0$ and for $0 < t < t_\mathrm{c}$ to the associated solution of invicid Burgers' equation, where $t_\mathrm{c}$ is the time of gradient catastrophe.

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。

↑