Glueball dynamics in the hot plasma
Abstract
We discuss the glueball contribution to the equation of state (EoS) of hot gluon matter below and above Tc. It is shown that the strong changing of masses of scalar and pseudoscalar glueballs near Tc plays very important role in the thermodynamics of SU(3) gauge theory. In particular, we give the arguments that these glueballs become massless at TG≈ 1.1Tc and this phenomenon is crucial in understanding of the mystery in the behavior of trace anomaly founded in the lattice calculation.
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