Multichannel coupling with supersymmetric quantum mechanics and exactly-solvable model for the Feshbach resonance

摘要: A new type of supersymmetric transformations the coupled-channel radial Schrodinger equation is introduced, which do not conserve vanishing behaviour solutions at origin. Contrary to usual transformations, these 'non-conservative' allow, in presence thresholds, construction well-behaved potentials with coupled scattering matrices from uncoupled potentials. As an example, exactly-solvable potential matrix obtained provides a very simple model Feshbach-resonance phenomenon.