Year: 2025
Type: article
Abstract: The configuration interaction relativistic Hartree-Fock (CI-RHF) model is developed in this work. Compared to the conventional configuration interaction shell model (CISM), the CI-RHF model can be applied to study the structural properties of a wide range of nuclei without readjusting any parameters, as the effective Hamiltonian for different model spaces can be deduced consistently from a universal density-dependent Lagrangian based on the Hartree-Fock single-particle basis. The convergence of intermediate-state excitations has been examined in evaluating the effective interactions, and the core-polarization effects are illustrated, taking as an example. Employing the CI-RHF model, both the bulk properties and low-lying spectra of even-even nuclei have been well-reproduced with the model space restricted to the shell. Studies of the isotopic evolution concerning charge radii and low-lying spectra highlight the shell closure at for neon isotopes. Furthermore, the cross-shell calculations extending from the to shell successfully reproduced the low-lying spectra of and . Notably, remarkably low excitation energies of suggest the disappearance of the conventional magicity .
Source: Chinese Physics C
Authors: Jia 佳 Liu 刘, Yi-Fei 一斐 Niu 牛, Wen-Hui 文辉 Long 龙
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4408175571