On real resonances for three-dimensional Schrodinger operators with point ¨ interactions†
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Date
2018
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Abstract
We prove the absence of positive real resonances for Schrodinger operators with finitely ¨
many point interactions in R 3 and we discuss such a property from the perspective of dispersive and scattering features of the associated Schrodinger propagator.
Description
SISSA preprint 40-2018-MATE
Keywords
point interactions, singular perturbations of the Laplacian, positive resonances, limiting absorption principle, definite positive functions