A Chebyshev Spectral Method for Nonlinear Fourier Transform: Norming Constants

2019/09/16 by Vishal Vaibhav, Vaibhav, Vishal
Computer Science · Engineering · Physics and Astronomy · #Computational Physics (physics.comp-ph) #FOS: Mathematics #FOS: Physical sciences #Image and Signal Denoising Methods #Nonlinear Waves and Solitons #Numerical Analysis (math.NA) #Optical Network Technologies

paper · pdf · doi:10.48550/arxiv.1909.07126

openalex publication_date 2019/09/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this paper, we present a Chebyshev based spectral method for the computation of the Jost solutions corresponding to complex values of the spectral parameter in the Zakharov--Shabat scattering problem. The discrete framework is then used to devise a new algorithm based on a minimum total variation (MTV) principle for the computation of the norming constants which comprise the discrete part of the nonlinear Fourier spectrum. The method relies on the MTV principle to find the points where the expressions for norming constants are numerically well-conditioned.

Citations

• The Inverse Scattering Transform‐Fourier Analysis for Nonlinear Problems
• A Fast and Well-Conditioned Spectral Method

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