Baryonic masses based on the NJL model
  We employ the Nambu Jona--Lasinio model to determine the vacuum pressure on the quarks in a baryon and hence their density inside. Then we estimate the baryonic masses by implementing the local density approximation for the mean field quark energies obtained in a uniform and isotropic system. We obtain a fair agreement with the experimental masses. 
W.M. Alberico, F. Giacosa, M. Nardi, C. Ratti