Perturbative Subtraction Methods

Details Perturbative Subtraction Methods Perturbative Subtraction Methods

1999-08-02

arxiv.org/abs/hep-lat/9908001v1

Nucl.Phys.Proc.Suppl. 83 (2000) 834-836

Physics

High Energy Physics

High Energy Physics - Lattice

Talk presented at LATTICE99(algorithms)

Scientific paper

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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