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arXiv · hep-lat/0401011

Improving meson two-point functions in lattice QCD

Thomas DeGrand·Stefan Schaefer
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Abstract

We describe and test a method to compute Euclidean meson two-point functions in lattice QCD. The contribution from the low-lying eigenmodes of the Dirac operator is averaged over all positions of the quark sources. The contribution from the higher modes is estimated in the traditional way with one or a few source points per lattice. In some channels, we observe a significant improvement in the two-point functions for small quark masses.

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Thomas DeGrand, Stefan Schaefer. 2004-01-06. Improving meson two-point functions in lattice QCD. https://doi.org/10.1016/j.cpc.2004.02.006

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