Practical all-to-all propagators for lattice QCD

Details Practical all-to-all propagators for lattice QCD Practical all-to-all propagators for lattice QCD

2005-05-20

arxiv.org/abs/hep-lat/0505023v1

Comput.Phys.Commun.172:145-162,2005

Physics

High Energy Physics

High Energy Physics - Lattice

24 pages, 18 figures

Scientific paper

10.1016/j.cpc.2005.06.008

A new method for computing all elements of the lattice quark propagator is proposed. The method combines the spectral decomposition of the propagator, computing the lowest eigenmodes exactly, with noisy estimators which are 'diluted', i.e. taken to have support only on a subset of time, space, spin or colour. We find that the errors are dramatically reduced compared to traditional noisy estimator techniques.

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