Soliton resolution for the Harry Dym equation with weighted Sobolev initial data
Abstract
The soliton resolution for the Harry Dym equation is established for initial conditions in weighted Sobolev space . Combining the nonlinear steepest descent method and -derivatives condition, we obtain that when the long time asymptotic expansion of the solution in any fixed cone \begin{equation} C\left(y_{1}, y_{2}, v_{1}, v_{2}\right)=\left\{(y, t) \in R^{2} \mid y=y_{0}+v t, y_{0} \in\left[y_{1}, y_{2}\right], v \in\left[v_{1}, v_{2}\right]\right\} \end{equation} up to an residual error of order . The expansion shows the long time asymptotic behavior can be described as an -soliton on discrete spectrum whose parameters are modulated by a sum of localized soliton-soliton interactions as one moves through the cone and the second term coming from soliton-radiation interactionson on continuous spectrum.
Cite
@article{arxiv.2103.10053,
title = {Soliton resolution for the Harry Dym equation with weighted Sobolev initial data},
author = {Lin Deng and Zhenyun Qin},
journal= {arXiv preprint arXiv:2103.10053},
year = {2021}
}
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41 pages