  The QCD phase diagram is analyzed within chiral quark models with nonlocal
separable interactions. For the case of two light flavors, we describe in
detail the characteristics of the chiral phase transition in the T-mu plane,
and analyze the color superconducting phase transition taking place at
relatively large chemical potentials. We also consider the three-flavor version
of the models, analyzing the predictions for masses and decay constants of
light pseudoscalar mesons.
