S-Wave Quarkonia in Potential Models

For the last twenty years the melting of heavy quark bound states has been considered an unambiguous signal for deconfinement [1]. Understanding the modification of the properties of heavy quarkonia in a hot medium is therefore essential for understanding deconfinement. Phenomenological studies based on potential models have been recently accompanied by lattice QCD calculations. The temperature-dependence of the meson correlators can provide information about the fate of quarkonia states above deconfinement. The Euclidean correlation functions of meson currents G(τ, T ) are reliably calculated on the lattice