3 papers
math.AP2026
Inverse Spectral Analysis of Singular Radial AKNS Operators
Damien Gobin, Benoît Grébert, Bernard Helffer +1
We study an inverse spectral problem for singular AKNS operators based on spectral data associated with two distinct values of the effective angular momentum parameter . Our…
math.AP2026
On uniqueness of radial potentials for given Dirichlet spectra with distinct angular momenta
Damien Gobin, Benoît Grébert, Bernard Helffer +1
We consider an inverse spectral problem for radial Schrödinger operators with singular potentials. First, we show that the knowledge of the Dirichlet spectra for infinitely many a…
math.AP2025
On almost periodic solutions to NLS without external parameters
Joackim Bernier, Benoît Grébert
In this note, we present a result established in [BGR24] where we prove that nonlinear Schrodinger equations on the circle, without external parameters, admit plenty of infinite di…