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arXiv · 1001.4366

Eigenspectrum Noise Subtraction Methods in Lattice QCD

Victor Guerrero·Ronald B. Morgan·Walter Wilcox
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Abstract

We propose a new noise subtraction method, which we call "eigenspectrum subtraction", which uses low eigenmode information to suppress statistical noise at low quark mass. This is useful for lattice calculations involving disconnected loops or all-to-all propagators. It has significant advantages over perturbative subtraction methods. We compare unsubtracted, eigenspectrum and perturbative error bar results for the scalar operator on a small Wilson QCD matrix.

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Victor Guerrero, Ronald B. Morgan, Walter Wilcox. 2010-01-25. Eigenspectrum Noise Subtraction Methods in Lattice QCD. https://arxiv.org/abs/1001.4366

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