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

M. D'Elia, A. Di Giacomo, E. Meggiolaro

hep-latarXiv:hep-lat/0205018

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.

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