  We study the features of a nonlocal SU(3) Polyakov-Nambu-Jona-Lasinio model
that includes wave function renormalization. Model parameters are determined
from vacuum phenomenology considering lattice QCD-inspired nonlocal form
factors. Within this framework we analyze the properties of light scalar and
pseudoscalar mesons at finite temperature and chemical potential determining
characteristics of deconfinement and chiral restoration transitions.
