THE COUPLING OF QUARK AND GLUON CONDENSATES IN HOT AND DENSE SYSTEMS

Two lagrangians, which implement the QCD scale anomaly, are used to st udy the coupling of quark and gluon condensates in dense and hot matte r. The response of the system strongly depends on the assumed value of the vacuum gluon condensate. For a low value of this vacuum gluon con densate, quark and gluon condensates feel simultaneously the chiral ph ase transition while for a larger value, the gluon condensate keeps it s vacuum value and the quark condensate is the only order parameter of the transition. We also calculate in both models the equation of stat e of nuclear matter.