Pseudo-spin as a relativistic symmetry
Y.K. Gambhir - J.P. Maharana - C.S. Warke
Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, INDIA
Received: 16 April 1998 / Revised version: 26 June 1998 Communicated by P. Schuck
The existence of broken pseudo-spin symmetry in the Pb nucleus has been studied in the relativistic mean field approach using realistic Lagrangian parameters. Its relationship to spin orbit splitting and the vanishingly small surface delta character of the mean spin orbit potential are investigated. In the 208Pb nucleus the broken pseudo-spin doublets are found to exist above the neutron (proton) Fermi surfaces.
21.60.Cs Shell model - 21.10.-k Properties of nuclei; nuclei energy levels - 21.30 Nuclear forces