Speaker
Description
The nuclear symmetry energy is a fundamental component of the nuclear equation of state (EoS) that significantly influences the properties of neutron-rich nuclei, heavy-ion collisions, and neutron star structure. In this study, we employ the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) with the PC-PK1 density functional to systematically investigate the effects of symmetry energy across the nuclear chart, including both stable and exotic isotopes.
Our analysis focuses on observables sensitive to symmetry energy, such as neutron skin thickness ($\Delta r_{np}$), two-neutron separation energies, nuclear deformation, and charge radii evolution. We examine correlations among neutron skin thickness, isospin asymmetry, and shell structure. Results for heavy nuclei such as $^{208}$Pb and $^{132}$Sn are compared with available experimental data.
Additionally, we explore neutron halo formation in weakly bound nuclei near the drip lines, identifying deformation and continuum coupling as key mechanisms. Our calculations successfully reproduce odd-even staggering and kink behavior in charge radii near shell closures, providing microscopic insights consistent with experimental observations.
These results clearly demonstrate the high predictive power of the DRHBc framework for isospin-dependent nuclear structure phenomena and will serve as a crucial theoretical foundation for interpreting and understanding related processes in both finite nuclei and nuclear astrophysics.
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