  We study the features of low energy strong interactions for a system at zero
temperature and finite baryon and isospin chemical potentials, in the framework
of a Nambu--Jona-Lasinio-like model that includes nonlocal four-point
interactions. We analyze the phase transitions corresponding to chiral symmetry
restoration and pion condensation, comparing our results with those obtained
from local NJL-like models and lattice QCD calculations.
