Pseudo-spin symmetry in density-dependent relativistic Hartree-Fock theory
Wen Hui Long, Hiroyuki Sagawa, Jie Meng, Nguyen Van Giai
Abstract
The pseudo-spin symmetry (PSS) is investigated in the density-dependent relativistic Hartree-Fock theory by taking the doubly magic nucleus 132Sn as a representative. It is found that the Fock terms bring significant contributions to the pseudo-spin orbital potentials (PSOP) and make it comparable to the pseudo-centrifugal barrier (PCB). However, these Fock terms in the PSOP are counteracted by other exchange terms due to the non-locality of the exchange potentials. The pseudo-spin orbital splitting indicates that the PSS is preserved well for the partner states ν3s1/2, 2d3/2 of 132Sn in the relativistic Hartree-Fock theory.
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