The order parameter of confinement together with the haaron model of the QCD
vacuum is reviewed and it is pointed out that confining forces are generated by
the non-renormalizable, invariant Haar-measure vertices of the path integral. A
hybrid model is proposed for the description of the crossover leading to the
confining vacuum. This scenario suggests that the differences between the low
and the high temperature phases of QCD should be looked for in the quark
channels instead of the hadronic sector.Comment: 8 pages, delivered at the Workshop on Quark Matter in Astro- and
Particle Physics, Rostock, Germany, november, 200
