Kavli Affiliate: Jia Liu
| First 5 Authors: Jia Liu, Yi Fei Niu, Wen Hui Long, ,
| Summary:
The configuration interaction relativistic Hartree-Fock (CI-RHF) model is
developed in this work. Compared to the conventional configuration interaction
shell model calculations, the CI-RHF model can be applied to study the
structural properties of a wide range of nuclei without readjusting any
parameters, because the effective Hamiltonian for different model space 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, by using $^{18}$O as an example.
Employing the CI-RHF model, both the bulk properties and low-lying spectra of
neon isotopes in the $sd$ shell have been well reproduced without introducing
additional parameters besides those well-defined in the phenomenological
Lagrangian. Moreover, the study of the isotopic evolution of charge radii and
low-lying spectra highlights the shell closure at $N=14$ for neon isotopes.
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