Fast Fits for Lattice QCD Correlators

Details Fast Fits for Lattice QCD Correlators Fast Fits for Lattice QCD Correlators

2011-11-06

arxiv.org/abs/1111.1363v1

Physics

High Energy Physics

High Energy Physics - Lattice

5 pages, 4 figures

Scientific paper

We illustrate a technique for fitting lattice QCD correlators to sums of exponentials that is significantly faster than traditional fitting methods --- 10--40 times faster for the realistic examples we present. Our examples are drawn from a recent analysis of the Upsilon spectrum, and another recent analysis of the D -> pi semileptonic form factor. For single correlators, we show how to simplify traditional effective-mass analyses.

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