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math.SP2026
Optimizing Riesz means of Robin Laplace operators on cuboids in a semiclassical limit
Matthias Baur, Simon Larson
We study asymptotic shape optimization for Riesz means of Robin Laplacian eigenvalues among cuboids of fixed measure. Our focus is the regime where the Robin parameter is proportio…
math.SP2025
Weak coupling asymptotics for the Pauli operator in two dimensions
Matthias Baur
We compute asymptotic expansions for the negative eigenvalues of the Pauli operator in two dimensions perturbed by a weakly coupled potential with definite sign. Whereas previous r…
math.SP2025
Eigenvalues of the magnetic Dirichlet Laplacian with constant magnetic field on disks in the strong field limit
Matthias Baur, Timo Weidl
We consider the magnetic Dirichlet Laplacian with constant magnetic field on domains of finite measure. First, in the case of a disk, we prove that the eigenvalue branches with res…