A model for color screening in a QCD plasma: the roles of thermal gluons and of confinement
Dipartimento di Fisica Teorica, Università di Trieste, Strada Costiera 11, Miramare-Grignano, 34014, Trieste, Italy
2 Sezione di Trieste, INFN, Via Valerio 2, 34127, Trieste, Italy
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Revised: 21 November 2005
Published online: 24 March 2006
The study of the screening in the plasma, in a model which takes into account only static interactions, is continued with the introduction of two new dynamical elements: the presence of thermal gluons and a phenomenological description of the confinement. In the first case the qq correlation and the correlation are similar to each other and also similar to the correlation in the absence of gluons: the decay with the distance deviates slightly from a standard exponential decay. In the second case the two-body confining potential gives rise to correlation functions oscillating with the distance, so that only the total correlation, i.e. the space integral, has a more transparent interpretation; moreover, the qq correlations and the correlations show very definite differences.
© Springer-Verlag, 2006