Quarkonia correlators and spectral functions from lattice QCD

I discuss recent progress in calculating quarkonia correlators and spectral functions on the lattice in relation with the problem of quarkonia dissolution at high temperatures and heavy quark transport in Quark Gluon Plasma.Comment: Invited plenary talk at Strangeness in Quark Matter 2006, LaTeX 8 pages, uses IOP syle, typos correcte

Recent progress in lattice QCD at finite temperature

I review recent progress in finite temperature lattice calculations, including the study of the nature of the deconfinement transition in QCD, equation of state, screening of static quarks and meson spectral functions.Comment: Talk presented at 25th Winter workshop on nuclear dynamics, Feb. 1-8, 2009. Big Sky Montana, 8 pages LaTe

Quarkonium correlators at finite temperature and potential models

We discuss the calculations of quarkonium spectral functions in potential models and their implications for the interpretation of the lattice data on quarkonium correlators. In particular, we find that melting of different quarkonium states does not lead to significant change in the Euclidean time correlators. The large change of the quarkonium correlators above deconfinement observed in the scalar and axial-vector channels appears to be due to the zero mode contribution.Comment: 8 pages LaTeX, contribution to Lattice 2007, July 30-4 August 2007, Regensburg, German

Predictions for Quarkonia Dissociation

We predict the upper bound on the dissociation temperatures of different quarkonium states.Comment: 2 pages, 2 figures, Presented at Heavy Ion Collisions at the LHC: Last Call for Prediction

Color Screening Melts Quarkonium

We calculate quarkonium spectral functions in a quark-gluon plasma using a potential model based on full QCD lattice calculations of the free energy of static quark-antiquark pair. We estimate the binding energy and the thermal width of different quarkonium states. The estimated upper limit for the dissociation temperatures is considerably lower than the ones suggested in the recent literature.Comment: 4 pages. version to be published in Phys. Rev. Let