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arxiv: hep-lat/9908001 · v1 · pith:4MNJ7VZJnew · submitted 1999-08-02 · ✦ hep-lat

Perturbative Subtraction Methods

classification ✦ hep-lat
keywords reductionsubtractionvarianceautomatedcurrentsdisconnecteddramaticeffects
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The effects of an automated, tenth order in $\kappa$ subtraction scheme on the noise variance of various Wilson QCD disconnected matrix elements are examined. It is found that there is a dramatic reduction in the variance of the lattice point-split electromagnetic currents and that this reduction persists at small quark mass.

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