2 and 3-point functions in the ENJL-model

Abstract

We discuss the extended Nambu-Jona-Lasinio model as a low energy expansion, all two-point functions and an example of a three-point function to all orders in momenta and quark masses. The model is treated at leading level in $1/N_c$ but otherwise exact. Some comments about the QCD flavour anomaly and Vector Meson Dominance in this class of models is made. Uses epsf.sty and rotate.sty. One postscript figure included at the end.

Comments: NORDITA 94/43 N,P, talk given by JB at QCD94, July 7-13, 1994, Montpellier, France