Ground-state properties of finite nuclei in relativistic Hartree-Bogoliubov theory with an improved quark mass density-dependent model

TL;DR

This paper develops a relativistic Hartree-Bogoliubov model based on quark-meson coupling with new parameters, systematically analyzing ground-state properties of a wide range of nuclei and validating against experimental data.

Contribution

It introduces an improved quark mass density-dependent model within the RHB framework to accurately describe finite nuclei ground-state properties.

Findings

Model reliably reproduces experimental binding energies.

Accurately predicts charge radii and separation energies.

Consistent description across nuclei with 8 ≤ Z ≤ 118.

Abstract

A relativistic Hartree-Bogoliubov (RHB) model based on quark-meson coupling is developed, with a new parametrization derived from experimental observables. Using this model, we systematically investigate the ground-state properties of even-even nuclei spanning $8\leq Z\leq118$, including binding energies, quadrupole deformations, root-mean-square (rms) charge radii, two-nucleon separation energies, two-nucleon shell gaps, and $\alpha$-decay energies. Comparisons with available experimental data demonstrate that this subnucleon-based RHB model reliably describes the ground-state properties of finite nuclei.