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Disorder parameter for confinement and vacuum field strength correlators.

Presenter: Adriano Di Giacomo — Pisa University and INFN

M.D'Elia , A. Di Giacomo, C. Pica

A numerical check is presented of an analytical computation of the disorder parameter for confinement in terms of gauge invariant field strength correlators in the stochastic vacuum approximation. The numerical check of the dependence on the monopole charge legitimates this approximation. It is also verified that the disorder parameter is singular in the continuum limit, like the Polyakov line. A preliminary investigation is reported of the infrared cut-off of the electric field correlators required in the confined phase.