The field strength correlator from QCD sum rules
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The gauge invariant two-point correlator for the gluon field strength tensor in analysed by means of the QCD sum rule method. To this end, we make use of a relation of this correlator to a two-point function for a quark-gluon hybrid in the limit of the quark mass going to infinity. From the sum rules a relation between the gluon correlation length and the gluon condensate is obtained.
5 pages, 1 figure, QCD Euroconference
5 pages, 1 figure, QCD Euroconference