  The hypothesis is investigated, that the thermal structure of QCD phases at
and near zero chemical potentials is determined by long range coherence,
inducing the gauge boson pair condensate, and its thermal extension,
representing a fundamental order parameter.The condensate does not produce any
latent heat as it vanishes at the critical temperature inducing a second order
phase transition with respect to energy density neglecting eventual numerically
small critical exponents. Localization and delocalization of color fields are
thus separated by a unique critical temperature.
