Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei

0562440 - ÚJF 2023 RIV NL eng J - Journal Article
Mercenne, A. - Launey, K. D. - Dytrych, Tomáš - Escher, J. E. - Quaglioni, S. - Sargsyan, G. H. - Langr, D. - Draayer, J. P.
Efficacy of the symmetry-adapted basis for ab initio nucleon-nucleus interactions for light- and intermediate-mass nuclei.
Computer Physics Communications. Roč. 280, NOV (2022), č. článku 108476. ISSN 0010-4655. E-ISSN 1879-2944
R&D Projects: GA ČR(CZ) GA22-14497S
Institutional support: RVO:61389005
Keywords : Nuclear physics reactions ab initio first * principles symmetry
OECD category: Nuclear physics
Impact factor: 6.2, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.cpc.2022.108476

We study the efficacy of a new ab initio framework that combines the symmetry-adapted (SA) nocore 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 4He, 16O, and 20Ne 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.
Permanent Link: https://hdl.handle.net/11104/0334759