Local $^4$He--p potentials from RGM phase shifts

Details Local $^4$He--p potentials from RGM phase shifts Local $^4$He--p potentials from RGM phase shifts

1993-09-06

arxiv.org/abs/nucl-th/9309003v1

Phys.Rev.C50:1308-1318,1994

Physics

Nuclear Physics

Nuclear Theory

LATEX with REVTEX, submitted to Phys. Rev. C, 12 figures (not included) are available upon request OUPD9314

Scientific paper

10.1103/PhysRevC.50.1308

Phase shifts for $\alpha$ + nucleon scattering generated by a multichannel 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 to those for the phase-equivalent local potentials.

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