Abstract
The chiral restoration reached at a temperature T c = T χSR ≈= 140 MeV in lattice gauge calculations is discussed. Using arguments based on the scaling properties of chiral Lagrangians and from the QCD sum rules, it is argued that hadrons decrease in mass with increasing temperatures and go essentially massless at T χSR . A sufficient number of hadrons go massless so that their degeneracy is comparable with that of quarks and gluons. In this case, the pressure in the hadron gas is greater than that in the quark/gluon sector, preventing the decondensation phase transition. Evidence is adduced that gluons remain condenced for temperatures T > T χSR .
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