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arXiv · 1111.1363

Fast Fits for Lattice QCD Correlators

K. Hornbostel·G. P. Lepage·C. T. H. Davies·R. J. Dowdall·H. Na·J. Shigemitsu
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Abstract

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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K. Hornbostel, G. P. Lepage, C. T. H. Davies, R. J. Dowdall, H. Na, J. Shigemitsu. 2011-11-06. Fast Fits for Lattice QCD Correlators. https://doi.org/10.1103/physrevd.85.031504

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