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The thermodynamics of the quark-gluon plasma: Self-consistent resummations vs. lattice data. (English) Zbl 0994.81126

We discuss a recent approach for overcoming the poor convergence of the perturbative expansion for the thermodynamic potential of QCD. This approach is based on self-consistent approximations which allow for a gauge-invariant and manifestly ultraviolet-finite resummation of the essential physics of the hard thermal/dense loops. The results thus obtained are in good agreement with available lattice data down to temperatures of about twice the critical temperature. Calculations for a plasma with finite quark density (i.e., with a non-zero chemical potential \(A\)) are no more difficult than at \(A = 0\).

MSC:

81V05 Strong interaction, including quantum chromodynamics
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