activity
20052026
most citedDynamics of solutions in the 1d bi-harmonic nonlinear Schrödinger equation

3 citations · 5 across the 9 of their papers we have counts for

collaborators

10 papers

math.AP2026

Ground states to bi-harmonic nonlinear Schrödinger equations with competing dispersion

Christian Klein, Svetlana Roudenko

We study ground-state solutions of the 4th order nonlinear Schrödinger equation with mixed dispersion via the elliptic profile equation , focusing on…

math.AP2026

The 3D critical Zakharov--Kuznetsov equation: blow-up and soliton dynamics

Christian Klein, Svetlana Roudenko, Nikola Stoilov

We study the full three-dimensional dynamics of the -critical Zakharov-Kuznetsov equation with the fractional nonlinearity , equivalently for real-valued…

math.AP2025★ 3 cited

Dynamics of solutions in the 1d bi-harmonic nonlinear Schrödinger equation

Christian Klein, Iryna Petrenko, Svetlana Roudenko +1

We consider the one dimensional 4th order, or bi-harmonic, nonlinear Schrödinger (NLS) equation, namely, , , and investigate…

gr-qc2024

Visualisation of counter-rotating dust disks using ray tracing methods

Eddy B. de Leon, J. Frauendiener, C. Klein

A detailed study of ray tracing in the space-time generated by a disk of counter-rotating dust is presented. The space-time is given in explicit form in terms of hyperelliptic thet…

math.NA2024

Multi-domain spectral approach to rational-order fractional derivatives

C. Klein, N. Stoilov

We propose a method to numerically compute fractional derivatives (or the fractional Laplacian) on the whole real line via Riesz fractional integrals. The compactified real line is…

math.AP2023

Numerical study of the Serre-Green-Naghdi equations in 2D

S. Gavrilyuk, C. Klein

A detailed numerical study of solutions to the Serre-Green-Naghdi (SGN) equations in 2D with vanishing curl of the velocity field is presented. The transverse stability of line sol…