Phase shifts for nucleon scattering generated by a multichannel resonating-group method (RGM) model of the five-nucleon system are subjected to iterative-perturbative mixed-case inversion for energies below the reaction threshold. The resulting phase-equivalent potentials are compared with local potentials calculated from the inversion of empirical phase shifts. A strong similarity is revealed between the two sets of potentials, most notably in the description by a parity- and energy-dependent local potential. In particular, the RGM-derived and empirical potentials share a distinctive form of parity dependence in which the odd-parity component is of greater radial extent. Comparison with potentials representing single-channel RGM phase shifts exhibits the importance of the coupled channels in terms of local potentials. The relative wave functions derived from RGM are very different from those for the phase-equivalent local potentials. Connections are made with general nucleon-nucleus scattering.
ASJC Scopus subject areas
- Nuclear and High Energy Physics