The Research Of U(4) Strong Interaction Model At Finite Temperature

Based on the U(4)-QCD model which is constructed with the combination of the Maximally Generalized Yang-Mills theory and the dynamical symmetry breaking mechanism(NJL mechanism),by using finite temperature field theory,the behavior of gauge symmetry at finite temperature is investigated.And it is shown that the broken gauge symmetry at zero temperature can be restored at finite temperature,meanwhile it is shown that quark confinement at zero temperature can be melted away under high temperature.