Fast numerical nonlinear Fourier transforms

S Wahls, HV Poor - IEEE Transactions on Information Theory, 2015 - ieeexplore.ieee.org
The nonlinear Fourier transform, which is also known as the forward scattering transform,
decomposes a periodic signal into nonlinearly interacting waves. In contrast to the common …

Discrete rogue waves of the Ablowitz-Ladik and Hirota equations

A Ankiewicz, N Akhmediev, JM Soto-Crespo - Physical Review E—Statistical …, 2010 - APS
We show that the Ablowitz-Ladik equation, which is an integrable form of the discretized
nonlinear Schrödinger equation, has rogue wave solutions in the form of the rational …

[HTML][HTML] Algebro-geometric solutions of the coupled modified Korteweg–de Vries hierarchy

X Geng, Y Zhai, HH Dai - Advances in Mathematics, 2014 - Elsevier
Based on the stationary zero-curvature equation and the Lenard recursion equations, we
derive the coupled modified Korteweg–de Vries (cmKdV) hierarchy associated with a 3× 3 …

Algebro-geometric quasi-periodic solutions to the Bogoyavlensky lattice 2 (3) equations

M Jia, X Geng, J Wei - Journal of Nonlinear Science, 2022 - Springer
The theory of tetragonal curves is established and first applied to the study of algebro-
geometric quasi-periodic solutions of discrete soliton equations. Using the zero-curvature …

On the Whitham modulation equations for the Toda lattice and the quantitative characterization of its dispersive shocks

G Biondini, C Chong, P Kevrekidis - Physica D: Nonlinear Phenomena, 2024 - Elsevier
The aim of this work is multifold. Firstly, it intends to present a complete, quantitative and self-
contained description of the periodic traveling wave solutions and Whitham modulation …

Decomposition of the (2+ 1)-dimensional Gardner equation and its quasi-periodic solutions

X Geng, C Cao - Nonlinearity, 2001 - iopscience.iop.org
Abstract To decompose the (2+ 1)-dimensional Gardner equation, an isospectral problem
and a corresponding hierarchy of (1+ 1)-dimensional soliton equations are proposed. The …

Decomposition of the discrete Ablowitz–Ladik hierarchy

X Geng, HH Dai, J Zhu - Studies in Applied Mathematics, 2007 - Wiley Online Library
The nonlinearization approach of Lax pairs is extended to the discrete Ablowitz–Ladik
hierarchy. A new symplectic map and a class of new finite‐dimensional Hamiltonian systems …

The robust inverse scattering method for focusing Ablowitz–Ladik equation on the non-vanishing background

Y Chen, BF Feng, L Ling - Physica D: Nonlinear Phenomena, 2021 - Elsevier
In this paper, we consider the robust inverse scattering method for the Ablowitz–Ladik (AL)
equation on the non-vanishing background, which can be used to deal with arbitrary-order …

Trigonal curves and algebro-geometric solutions to soliton hierarchies II

WX Ma - Proceedings of the Royal Society A …, 2017 - royalsocietypublishing.org
This is a continuation of a study on Riemann theta function representations of algebro-
geometric solutions to soliton hierarchies. In this part, we straighten out all flows in soliton …

Quasi-periodic solutions of the Kaup–Kupershmidt hierarchy

X Geng, L Wu, G He - Journal of Nonlinear Science, 2013 - Springer
Based on solving the Lenard recursion equations and the zero-curvature equation, we
derive the Kaup–Kupershmidt hierarchy associated with a 3× 3 matrix spectral problem …