Relativistic Mean Field Approach and the Pseudo-Spin Symmetry
  Based on the Relativistic Mean Field (RMF) approach the existence of the broken pseudo-spin symmetry is investigated. Both spherical RMF and constrained deformed RMF calculations are carried out employing realistic Lagrangian parameters for spherical and for deformed sample nuclei. The quasi - degenerate pseudo-spin doublets are confirmed to exist near the fermi surface for both spherical and deformed nuclei. 
G. A. Lalazissis, Y. K. Gambhir, J. P. Maharana, C. S. Warke, P. Ring