Gauge-invariant field-strength correlators in pure Yang-Mills and full QCD at finite temperature

Abstract

We study by numerical simulations on a lattice the behaviour of the gauge-invariant two-point correlation functions of the gauge-field strengths across the deconfinement phase transition, both for the pure-gauge SU(3) theory and for full QCD with two flavours. Quenched data agree within errors with previous determinations, but have much higher statistics. A best-fit analysis of the data has been performed, both for the quenched and the full-QCD case, showing that the electric gluon condensate drops to zero at the deconfining phase transition.

17 pages, LaTeX file, + 10 PS figures. Completely revised version, including a best-fit analysis of the data, 2 new figures, 3 new tables and new references

References in corpus (2)

• On the dependence of the gauge-invariant field-strength correlators in QCD on the shape of the Schwinger string
• Finite temperature correlation functions

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