Perpustakaan Digital ITB

The mechanism that restores pseudospin symmetry (PSS) is investigated under the relativistic Hartree-Fock (RHF) approach, by focusing on the in-medium balance between nuclear attractive and repulsive interactions. It is illustrated that the modelings of both the equilibrium of nuclear dynamics and the in-medium effects can be essentially changed by the ?-tensor coupling that plays the role almost fully via the Fock terms, from which the model discrepancy on the PSS restoration is verified. Specifically, the largely different density-dependent behaviors of the isoscalar coupling strengths g? and g?, deduced from the parametrization of the RHF Lagrangian PKA1, play an essential role in restoring the PSS of the high-l pseudospin doublets around the Fermi levels. Qualitatively, guidance is provided for the modeling of both the equilibrium of nuclear dynamics and the inmedium effects via the PSS restoration.