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- W2012021307 abstract "Abstract The pseudo-spin symmetry (PSS) is investigated in the framework of the relativistic Hartree–Fock approximation (RHFA). The Dirac equation is reduced to a Schrodinger like equation for the small component of the nucleon spinor. Though this equation reveals that the symmetry appears to be broken even in the ΣSD+Σ0D=0 limit, where ΣSD and Σ0D are the direct (Hartree) scalar and time component of the vector nucleon self-energies, respectively, pseudo-spin symmetry is approximately conserved. The behavior of the single-particle potentials and of the wave functions of both neutron and proton pseudo-spin doublets in the 40Ca and 48Ca nuclei are analyzed. There is no dominance of the term dependent on the pseudo-orbital angular momentum (containing the pseudo-centrifugal barrier) compared to the pseudo-spin–orbit potential (PSOP). The contributions to the energy of each pseudo-spin doublet (PSD) level coming from all terms entering the equation for the small component of the Dirac spinor are calculated. The quasi-degeneracy of the PSD levels in the RHFA can be explained by a compensation of the differences between these contributions. The effect of the self-consistency is comparable to that of the PSOP itself." @default.
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- W2012021307 date "2003-11-01" @default.
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- W2012021307 title "Pseudo-spin–orbit potential in the relativistic Hartree–Fock formalism" @default.
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- W2012021307 doi "https://doi.org/10.1016/j.nuclphysa.2003.07.012" @default.
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