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Two-dimensional Schr\"odinger operators with non-local singular potentials
In this paper we introduce and study a family of self-adjoint realizations of the Laplacian in $L^2(\mathbb{R}^2)$ with a new type of transmission conditions along a closed bi-Lipschitz curve $\Sigma$. These conditions incorporate jumps in the Dirichlet traces both of the functions in the operator domains and of their Wirtinger …