Modified Zimanyi-Moszkowski Model for Finite Nuclei
  By scaling the mesonic masses in the Walecka model, to the inverse of the hadronic effective mass in medium, we generate the Zimanyi-Moszkowski (ZM) models added to a surface term. For infinite nuclear matter, the surface term vanishes and this new model becomes equivalent to the usual ZM model. For finite nuclei calculations, the surface contribution changes the spin-orbit splitting in the right experimental direction. Calculations for some nuclei are presented. 
A. Delfino (UFF), M. Chiapparini (UERJ), W. A. Colchete (UFF)