  We propose an effective theory of SU(3) gluonic matter where interactions
between color-electric and color-magnetic gluons are constrained by the center
and scale symmetries. Through matching to the dimensionally-reduced magnetic
theories, the magnetic gluon condensate qualitatively changes its thermal
behavior above the critical temperature. We argue its phenomenological
consequences for the thermodynamics, in particular the dynamical breaking of
scale invariance.
