Reconstructing the nucleon-nucleon potential by a new coupled-channel inversion method
| Autor: | Pupasov, Andrey, Samsonov, Boris F., Sparenberg, Jean-Marc, Baye, Daniel |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Phys.Rev.Lett.106:152301,2011 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.106.152301 |
| Popis: | A second-order supersymmetric transformation is presented, for the two-channel Schr\"odinger 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. Comment: 4 pages, 4 figures |
| Databáze: | arXiv |
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