Evolutionary Fitting Methods for the Extraction of Mass Spectra in Lattice Field Theory

Details Evolutionary Fitting Methods for the Extraction of Mass Spectra in Lattice Field Theory Evolutionary Fitting Methods for the Extraction of Mass Spectra in Lattice Field Theory

2007-07-18

arxiv.org/abs/0707.2788v2

Comput.Phys.Commun.178:713-723,2008

Physics

High Energy Physics

High Energy Physics - Lattice

39 pages, 7 figures; uses elsart.cls; version to appear in Comput.Phys.Commun

Scientific paper

10.1016/j.cpc.2007.12.005

We present an application of evolutionary algorithms to the curve-fitting problems commonly encountered when trying to extract particle masses from correlators in Lattice QCD. Harnessing the flexibility of evolutionary methods in global optimization allows us to dynamically adapt the number of states to be fitted along with their energies so as to minimize overall \chi^2/(d.o.f.), leading to a promising new way of extracting the mass spectrum from measured correlation functions.

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