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We show that the 1/p 2 power corrections to the ultraviolet asymptotic solutions are allowed as consistent solutions of the coupled Schwinger-Dyson equation for the gluon and (Faddeev-Popov) ghost propagators in Yang-Mills theory. This result supports the existence of the vacuum condensate <A μ2 > with mass dimension 2, as recently suggested by the operator product expansion...
We demonstrate that a clear physical content and relevance can be attributed to the on-shell BRST-invariant mixed gluon-ghost condensate of mass dimension two which was recently proposed by the author. We argue that a gauge invariant observable is associated with the mixed condensate.
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