  The space-time development of a quark-gluon plasma is calculated from a
Vlasov equation for the distribution function of quasiparticles with medium
dependent masses. At each space-time point the masses are calculated
selfconsistently from a gap equation, whose form is determined by the
requirement that in thermal equilibrium and for a range of temperatures the
energy density of the quasi-particle system is identical to the one from
lattice calculations . The numerical solutions of the Vlasov equation display
confinement. Relations to effective theories like that by Friedberg Lee and
Nambu Jona-Lasinio are established.
