Year: 2023
Type: preprint
Abstract: We present new microscopic effective shell-model interactions in the valence sd shell, obtained from the modern Daejeon16 nucleon-nucleon potential using no-core shell-model (NCSM) wave functions of 18F at Nmax=6 (total oscillator quanta of excitation) model space and the Okubo-Lee-Suzuki transformation. First, we explore the convergence properties of our calculations and show that the excitation energies of states in 18F, characterized by the largest valence-like configurations, are reasonably converged and the lowest states are in sensible agreement with experiment. Then, we investigate the monopole properties of that interaction in comparison with the phenomenological universal sd-shell interaction, USDB, and with the previously derived interaction at Nmax=4. Theoretical binding energies and low-energy spectra of the O isotopes, as well as low-energy spectra of a selection of $sd$-shell nuclei, are presented. We conclude that the use of larger-space NCSM wave functions leads to a noticeable improvement in the quality of the derived effective interaction. We propose monopole modifications of the Daejeon16 centroids which further improve the agreement with experiment throughout the sd shell, as demonstrated by a compilation of spectra contained in Supplemental Material.
Institutions: Institute for Basic Science, Centre National de la Recherche Scientifique, Université de Bordeaux, Laboratoire de Physique des deux infinis Bordeaux, Institut National de Physique Nucléaire et de Physique des Particules, Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Chinese Academy of Sciences, Institute of Modern Physics, RIKEN Nishina Center, University of Arizona, Iowa State University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: U.S. Department of Energy, National Energy Research Scientific Computing Center, National Research Foundation, Russian Foundation for Basic Research, National Research Foundation of Korea, Centre National de la Recherche Scientifique, Université de Bordeaux, Institute for Basic Science, Ministry of Science and ICT, South Korea, Office of Science, Japan Society for the Promotion of Science, Institut National de Physique Nucléaire et de Physique des Particules, National Supercomputing Center, Korea Institute of Science and Technology Information
Awards: G118106826, G122673668, G1286236842, G1501359937, G1677143136, G196419191, G222768804, G227586730, G3083819904, G3246239289, RESEARCH IN INTERMEDIATE/HIGH ENERGY PHYSICS, r-process nucleosynthesis and role of deformed nuclei, G4077007235, G4501827968, G4547971943, G469631764, G4845049930, G491409662, G498139845, G5076365615, G6147847627, G6203188400, G6447494072, G6649312515, G6652958823, G6986277050, G6992476341, G7278572226, G7568825974, G8065397718, G8533751962, G8680375035, G8683760817, G8831021342, RESEARCH IN INTERMEDIATE/HIGH ENERGY PHYSICS, G969889393
OpenAlex ID: W4383046444