Nodal domains and spectral minimal partitions
B. Helffer, T. Hoffmann-Ostenhof, S. Terracini
Abstract
We consider two-dimensional Schrödinger operators in bounded domains. We analyze relations between nodal domains of eigenfunctions, spectral minimal partitions and spectral properties of the corresponding operator. The main results concern the existence and regularity of the minimal partitions associated with the nodal sets as the nodal domains of Courant-sharp eigenfunctions.
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