NJL model with infrared confinement
  We consider an extended Nambu--Jona-Lasinio (NJL) model for the light meson sector of QCD where unphysical quark production thresholds are excluded by an infrared cut-off on the momentum integration within quark loop diagrams. This chiral quark model conserves the low energy theorems. The infrared cut-off is fixed selfconsistently by the dynamically generated quark mass (quark condensate). The masses and decay widths of the \sigma- and \rho-mesons are described in the model. 
D. Blaschke (1), G. Burau (1), M. K. Volkov (2), V. L. Yudichev (2)   ((1) Rostock Univ., Germany, (2) JINR, Dubna, Russia)