To What Distances Do We Know the Connning Potential?
نویسنده
چکیده
We argue that the linear static potential is built in into the common procedure of extracting it from lattice Wilson loop measurements. To illustrate the point, we extract the potential by the standard lattice method in a model vacuum made of instantons. A beautiful innnitely rising linear potential is obtained in the case where the true potential is actually attening. We argue that the ux tube formation might be also an artifact of the lattice procedure and not necessarily a measured physical eeect. We conclude that at present the rising potential is observed up to no more than about 0:7 fm. It explains why no screening has been clearly observed so far for adjoint sources and for fundamental sources but with dynamical fermions.
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