1. Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei
- Author
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A. Mercenne, K.D. Launey, T. Dytrych, J.E. Escher, S. Quaglioni, G.H. Sargsyan, D. Langr, and J.P. Draayer
- Subjects
Nuclear Theory (nucl-th) ,Nuclear Theory ,Hardware and Architecture ,FOS: Physical sciences ,General Physics and Astronomy ,Nuclear Experiment - Abstract
We study the efficacy of a new ab initio framework that combines the symmetry-adapted (SA) no-core shell-model approach with the resonating group method (RGM) for unified descriptions of nuclear structure and reactions. We obtain ab initio neutron-nucleus interactions for $^4$He, $^{16}$O, and $^{20}$Ne targets, starting with realistic nucleon-nucleon potentials. We discuss the effect of increasing model space sizes and symmetry-based selections on the SA-RGM norm and direct potential kernels, as well as on phase shifts, which are the input to calculations of cross sections. We demonstrate the efficacy of the SA basis and its scalability with particle numbers and model space dimensions, with a view toward ab initio descriptions of nucleon scattering and capture reactions up through the medium-mass region., 10 pages, 6 figures
- Published
- 2022
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