activity
20092026
most citedSchrödinger operators with delta and delta'-potentials supported on hypersurfaces

79 citations · 481 across the 62 of their papers we have counts for

collaborators

77 papers

cs.LG2026

On the Convergence of Semi-Gradient TD: A Mean Field Perspective

Haruki Settai, Tadashi Kozuno, Shinji Ito

Semi-gradient temporal-difference learning is a core algorithmic component of reinforcement learning, but bootstrapping with function approximation generally induces a non-conserva…

math.SP2026

On the discrete spectrum of Dirac operators with Lorentz-scalar -shell interactions supported on unbounded curves

Markus Holzmann, Vladimir Lotoreichik, Marco Vogel

We consider the massive Dirac operator (with positive mass) in the plane with an attractive Lorentz-scalar -shell interaction of strength suppor…

math.AP2026

Isoperimetric inequalities for the lowest magnetic Steklov eigenvalue

Ayman Kachmar, Vladimir Lotoreichik

This paper studies the optimization of the lowest eigenvalue of the magnetic Steklov problem on planar domains. In the bounded domain setting and for magnetic fields of moderate st…

math.AP2026

Optimisation of the lowest Robin eigenvalue in exterior domains of the hyperbolic plane

Antonio Celentano, David Krejcirik, Vladimir Lotoreichik

We consider the Robin Laplacian in the exterior of a bounded simply-connected Lipschitz domain in the hyperbolic plane. We show that the essential spectrum of this operator is $[\f…

math.SP2025

On shape optimization with large magnetic fields in two dimensions

Vladimir Lotoreichik, Léo Morin

This paper aims to show that, in the limit of strong magnetic fields, the optimal domains for eigenvalues of magnetic Laplacians tend to exhibit symmetry. We establish several asym…

math.SP2025

Convergence of Schrödinger operators on domains with scaled resonant potentials

Vladimir Lotoreichik, Olaf Post

We consider Schrödinger operators on a bounded, smooth domain of dimension with Dirichlet boundary conditions and a properly scaled potential, which depends only on the d…