A fully discrete low-regularity integrator for the 1D periodic cubic nonlinear Schrödinger equation

B Li, Y Wu - Numerische Mathematik, 2021 - Springer
A fully discrete and fully explicit low-regularity integrator is constructed for the one-
dimensional periodic cubic nonlinear Schrödinger equation. The method can be …

A new second-order low-regularity integrator for the cubic nonlinear Schrödinger equation

J Cao, B Li, Y Lin - IMA Journal of Numerical Analysis, 2024 - academic.oup.com
This article is concerned with the question of whether it is possible to construct a time
discretization for the one-dimensional cubic nonlinear Schrödinger equation with second …

Embedded exponential-type low-regularity integrators for KdV equation under rough data

Y Wu, X Zhao - BIT Numerical Mathematics, 2022 - Springer
In this paper, we introduce a novel class of embedded exponential-type low-regularity
integrators (ELRIs) for solving the KdV equation and establish their optimal convergence …

A first-order Fourier integrator for the nonlinear Schrödinger equation on 𝕋 without loss of regularity

Y Wu, F Yao - Mathematics of Computation, 2022 - ams.org
In this paper, we propose a first-order Fourier integrator for solving the cubic nonlinear
Schrödinger equation in one dimension. The scheme is explicit and can be implemented …

An embedded exponential-type low-regularity integrator for mKdV equation

C Ning, Y Wu, X Zhao - SIAM Journal on Numerical Analysis, 2022 - SIAM
In this paper, we propose an embedded low-regularity integrator (ELRI) under a new
framework for solving the modified Korteweg-de Vries (mKdV) equation under rough data …

Optimal convergence of a second-order low-regularity integrator for the KdV equation

Y Wu, X Zhao - IMA Journal of Numerical Analysis, 2022 - academic.oup.com
In this paper, we establish the optimal convergence for a second-order exponential-type
integrator from Hofmanová & Schratz (2017, An exponential-type integrator for the KdV …

An unfiltered low-regularity integrator for the KdV equation with solutions below

B Li, Y Wu - arxiv preprint arxiv:2206.09320, 2022 - arxiv.org
This article is concerned with the construction and analysis of new time discretizations for
the KdV equation on a torus for low-regularity solutions below $ H^ 1$. New harmonic …

[PDF][PDF] A constructive low-regularity integrator for the 1d cubic nonlinear Schrödinger equation under the Neumann boundary condition

G Bai, B Li, Y Wu - IMA J. Numer. Anal, 2022 - libuyang.com
A new harmonic analysis technique by using the Littlewood–Paley dyadic decomposition is
developed for constructing low-regularity integrators for the one-dimensional cubic …

Gauge-transformed exponential integrator for generalized KdV equations with rough data

B Li, Y Wu, X Zhao - SIAM Journal on Numerical Analysis, 2023 - SIAM
In this paper, we propose a new exponential-type integrator for solving the gKdV equation
under rough data. By introducing new frequency approximation techniques and a key gauge …

Convergence error estimates at low regularity for time discretizations of KdV

F Rousset, K Schratz - Pure and Applied Analysis, 2022 - msp.org
We consider various filtered time discretizations of the periodic Korteweg–de Vries equation:
a filtered exponential integrator, a filtered Lie splitting scheme, as well as a filtered …