Nuclear halo structure and pseudo-spin symmetry

Abstract

Nuclear halo structure and restoration of relativistic symmetry are studied within the framework of the relativistic Hartree-Fock-Bogoliubov (RHFB) theory. Giant halos as well as ordinary ones are found in Cerium isotopes close to the neutron drip line. Bridged by T=0 {channel}, the restoration of pseudo-spin symmetry (PSS) plays an essential role in stabilizing the neutron halo structures. The Fock terms, especially the $\rho$-tensor couplings, not only play significant role in the PSS restoration but also present substantial contributions to the T=0 {channel}, from which is well demonstrated the necessity of Fock terms.

5pages, 4figures, 1table

References in corpus (6)

• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• Shell Structure and $\rho$-Tensor Correlations in Density-Dependent Relativistic Hartree-Fock theory
• Evolution of Nuclear Shell Structure due to the Pion Exchange Potential
• Pseudo-spin symmetry in density-dependent relativistic Hartree-Fock theory
• Non-local mean field effect on nuclei near Z=64 sub-shell
• Giant neutron halos in the non-relativistic mean field approach