Abstract
Nuclear halo structure and conservation of relativistic symmetry are studied within the framework of the relativistic Hartree-Fock-Bogoliubov theory. Giant halos as well as ordinary ones are found in cerium isotopes close to the neutron drip line. Bridged by the channel, the conservation of pseudospin symmetry (PSS) plays an essential role in stabilizing the neutron halo structures. The Fock terms, especially the -tensor couplings, not only play a significant role in PSS conservation but also present substantial contributions to the channel, by which the necessity of Fock terms is well demonstrated.
- Received 24 November 2009
DOI:https://doi.org/10.1103/PhysRevC.81.031302
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