Application of the Nonlinear Steepest Descent Method to the Coupled Sasa-Satsuma Equation

Application of the Nonlinear Steepest Descent Method to the Coupled Sasa-Satsuma Equation

Year:    2021

Author:    Xianguo Geng, Mingming Chen, Kedong Wang

East Asian Journal on Applied Mathematics, Vol. 11 (2021), Iss. 1 : pp. 181–206

Abstract

We use spectral analysis to reduce Cauchy problem for the coupled Sasa-Satsuma equation to a 5 × 5 matrix Riemann-Hilbert problem. The upper and lower triangular factorisations of the jump matrix and a decomposition of the vector-valued spectral function are given. Applying various transformations related to the Riemann-Hilbert problems and suitable decompositions of the jump contours and the nonlinear steepest descent method, we establish the long-time asymptotics of the problem.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/eajam.220920.250920

East Asian Journal on Applied Mathematics, Vol. 11 (2021), Iss. 1 : pp. 181–206

Published online:    2021-01

AMS Subject Headings:   

Copyright:    COPYRIGHT: © Global Science Press

Pages:    26

Keywords:    Coupled Sasa-Satsuma equation nonlinear steepest descent method long-time asymptotics.

Author Details

Xianguo Geng

Mingming Chen

Kedong Wang

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