Nonperturbative evaluation of a field correlator appearing in the heavy quarkonium system

Details Nonperturbative evaluation of a field correlator appearing in the heavy quarkonium system Nonperturbative evaluation of a field correlator appearing in the heavy quarkonium system

1996-09-03

arxiv.org/abs/hep-ph/9609233v1

Phys.Lett. B389 (1996) 577-585

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, Latex--Elsevier document class 'elsart'

Scientific paper

10.1016/S0370-2693(96)01297-X

Recently an electric and magnetic field correlator appearing in the description of the heavy quarkonium system was evaluated on the lattice. Here, we give a nonperturbative analytical evaluation of this field correlator using a dual description of long distance Yang--Mills theory and using the stochastic vacuum model. The two predictions are both compatible with lattice data but show a different dependence on the quark separation. We discuss the analytic results in relation to the lattice data.

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