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Yasuyuki Suzuki

Niigata University, Japan
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Phase-shift calculation using continuum-discretized states

We present a method for calculating scattering phase shifts which
utilizes continuum-discretized states obtained in a bound-state type
calculation. The wrong asymptotic behavior of the discretized state
is remedied by means of the Green's function formalism. Test examples
confirm the accuracy of the method. The 4He+n scattering is described
using realistic nucleon-nucleon potentials. The 3/2- and 1/2- phase
shifts obtained in a single-channel calculation are too small in
comparison with experiment. The 1/2+ phase shifts are in reasonable
agreement with experiment, and gain contributions both from
the tensor and central components of the nucleon-nucleon potential.

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