Deconfinement and chiral restoration in nonlocal SU(3) chiral quarks models

JUAN PABLO CARLOMAGNO; DANIEL GÓMEZ DUMM

Buenos Aires

Workshop; PASI 2012 - Exploring the terascale and beyond; 2012

The study of hadron properties such as their masses and coupling constants requires in general to deal with QCD at low energies, where the strong coupling constant becomes large and the theory is nonperturbative. This problem can be addressed by the introduction of effective models, i.e. models that are based on simplified Lagrangians compared to that of QCD, but retain the basic properties of the fundamental theory. Here we consider a nonlocal SU(3) chiral quark model, in which quarks are coupled to a background color field. Within the mean field approximation, we determine the model parameters and study the basic properties of light pseudoscalar mesons. Then, we consider the case of finite temperature, analyzing the deconfinement and chiral restoration transitions.