Bochum 1998 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 30: Nuclear Forces II, Theory

HK 30.4: Vortrag

Dienstag, 17. März 1998, 15:15–15:30, F

Momentum Dependent NN-Potentials for Coupled Channels via Inversion — •H. Leeb and F. Korinek — Insitut für Kernphysik, TU Wien, Wiedner Hauptstraße 8-10/142, A-1040 Wien, Austria

The determination of NN-potentials from phase shifts via global inversion techniques was restricted to momentum independent interactions and therefore a direct comparison with realistic NN-potentials derived from meson theory was hampered. Recently, we developed an inversion scheme based on Darboux transformations which includes a term proportional to the square of the momentum. In this contribution we present a non-straightforward extension of this inversion scheme to coupled-channels. The new method includes also bound states and allows us to determine NN-potentials directly from phase shifts by algebraic means. Thus a direct comparison with realistic potentials for all channels becomes possible. Assuming different strengths of the momentum dependent term a set of phase equivalent NN-potentials is obtained which allows a systematic study of the influence of the nonlocality on few-body observables.

Work supported by FWF-Austria, projekt-number P10467-PHY.