出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present results on heavy quark free energies in 2-flavour QCD. The temperature dependence
of the interaction between static quark anti-quark pairs will be analyzed in terms of temperature
dependent screening radii, which give a first estimate on the medium modification of (heavy
quark) bound states in the quark gluon plasma. Comparing those radii to the (zero temperature)
mean squared charge radii of charmonium states indicates that the J/y may survive the phase
transition as a bound state, while cc and y′ are expected to show significant thermal modifications
at temperatures close to the transition. Furthermore we will analyze the relation between
heavy quark free energies, entropy contributions and internal energy and discuss their relation to
potential models used to analyze the melting of heavy quark bound states above the deconfinement
temperature. Results of different groups and various potential models for bound states in
the deconfined phase of QCD are compared.
