Finite Temperature QCD Sum Rules: a Review

TL;DR

This review discusses the application of finite temperature QCD sum rules to predict hadron behavior near deconfinement, including charmonium, bottomonium, and light-quark states, with recent lattice QCD confirmations.

Contribution

It provides a comprehensive overview of recent advances in finite temperature QCD sum rules, including predictions for quarkonium survival and extensions to finite baryon chemical potential.

Findings

Charmonium and bottomonium states survive beyond the critical temperature.

Predictions for the dimuon spectrum in heavy ion collisions.

Temperature dependence of quark masses and pion decay constant.

Abstract

The method of QCD sum rules at finite temperature is reviewed, with emphasis on recent results. These include predictions for the survival of charmonium and bottonium states, at and beyond the critical temperature for de-confinement, as later confirmed by lattice QCD simulations. Also included are determinations in the light-quark vector and axial-vector channels, allowing to analyse the Weinberg sum rules, and predict the dimuon spectrum in heavy ion collisions in the region of the rho-meson. Also in this sector, the determination of the temperature behaviour of the up-down quark mass, together with the pion decay constant, will be described. Finally, an extension of the QCD sum rule method to incorporate finite baryon chemical potential is reviewed.