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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

Linear stability of elastic $2$-line solitons for the KP-II equation


Author: Tetsu Mizumachi
Journal: Quart. Appl. Math. 82 (2024), 115-226
MSC (2020): Primary 35B35, 37K40; Secondary 35Q35
DOI: https://doi.org/10.1090/qam/1676
Published electronically: July 20, 2023
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Abstract: The KP-II equation was derived by Kadomtsev and Petviashvili to explain stability of line solitary waves of shallow water. Using the Darboux transformations, we study linear stability of $2$-line solitons whose line solitons interact elastically each other. Time evolution of resonant continuous eigenfunctions is described by a damped wave equation in the transverse variable which is supposed to be a linear approximation of the local phase shifts of modulating line solitons.


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Additional Information

Tetsu Mizumachi
Affiliation: Division of Mathematical and Information Sciences, Hiroshima University, Kagamiyama 1-7-1, 739 - 8521, Japan
MR Author ID: 617945
ORCID: 0000-0001-5041-7291
Email: tetsum@hiroshima-u.ac.jp

Received by editor(s): June 21, 2023
Published electronically: July 20, 2023
Additional Notes: This work was supported by JSPS KAKENHI Grant Number JP21K03328. A part of this research was done in the Institute of Mathematics, Academia Sinica in Taiwan.
Dedicated: Dedicated to Professor Robert L. Pego’s 65th birthday
Article copyright: © Copyright 2023 Brown University