THE U(3)XU(3) NAMBU-JONA-LASINIO MODEL WITH THE GLUON CONDENSATE AND AXIAL ANOMALY AT FINITE-TEMPERATURE

The U(3) x U(3) Nambu-Jona-Lasinio model with the gluon condensate and axial anomaly ('t Hooft determinant) is investigated at finite temperature. We study the behavior of the constituent quark masses, quark condensates, meson masses, coupling constants as functions of the temperature. It is shown that the gluon condensate plays a stabilizing role for behavior of physical quantities when temperature changes. This influence is more visible for the light quarks (up and down). The axial anomaly and the mixing angle (eta, eta') decrease when the temperature increases.