Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2002 > Finite Temperature and Density in Chiral...
acta de conferencia
"Finite Temperature and Density in Chiral Quark Models"
D. Gómez Dumm and N.N. Scoccola
Proc. of the "New States of Matter in Hadronic Interactions: Pan American Advanced Study Institute (PASI) International Summer School", Campos Do Jordão, São Paulo, Brazil, January 7-18, 2002.
AIP Conf. Proc., Vol.631 (2002) 695-703
Chiral quark models with non-local covariant separable interactions at finite temperature and chemical potential are investigated. We develop a formalism in which the different quark properties are evaluated taking into account the analytic structure of the quark propagator. In this framework we study the chiral restoration phase transition for some definite non-local regulators. We find that in all cases the chiral transition is of first order for low values of T, turning into a smooth crossover at a certain “end point”. Using model parameters which lead to the physical pion mass and decay constant, we find for the position of this “end point” the values (TE,μE)~(60-70,180-210) MeV.
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121