Nucleon-nucleus elastic scattering from a symmetry-adapted framework*

Effective interactions (or optical potentials) are frequently used to describe a variety of nuclear reactions. When derived from first principles, effective interactions maintain their predictive power and may be able to provide insight into properties of nuclei beyond the reach of current experimental techniques. Within the spectator expansion of multiple scattering theory, a nucleon-nucleus effective interaction can be constructed by using the relevant nonlocal densities from an ab initio nuclear structure model, e.g. the no-core shell model. Here, we determine the applicability of nonlocal densities calculated from the symmetry-adapted no-core shell model to describe proton elastic scattering in light nuclei at medium energies and compare those results to the results from the complete model space. We then extend into nucleon scattering on intermediate mass nuclei and compare to the available experimental data.