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Paper detail

Reconstructing the nucleon-nucleon potential by a new coupled-channel inversion method

A second-order supersymmetric transformation is presented, for the two-channel Schrödinger equation with equal thresholds. It adds a Breit-Wigner term to the mixing parameter, without modifying the eigenphase shifts, and modifies the potential matrix analytically. The iteration of a few such transformations allows a precise fit of realistic mixing parameters in terms of a Pade expansion of both the scattering matrix and the effective-range function. The method is applied to build an exactly-solvable potential for the neutron-proton $^3S_1$-$^3D_1$ case.

preprint2011arXivOpen access
Andrey PupasovBoris F. SamsonovJean-Marc SparenbergDaniel Baye
math-phmath.MPnucl-th
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Andrey PupasovBoris F. SamsonovJean-Marc SparenbergDaniel Baye

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