Evolutionary Fitting Methods for the Extraction of Mass Spectra in Lattice Field Theory
| Autor: | Robert G. Petry, Randy Lewis, Georg M. von Hippel |
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| Rok vydání: | 2007 |
| Předmět: |
Physics
Quantum chromodynamics 010308 nuclear & particles physics Numerical analysis Lattice field theory High Energy Physics - Lattice (hep-lat) Evolutionary algorithm General Physics and Astronomy FOS: Physical sciences Lattice QCD Computational Physics (physics.comp-ph) 16. Peace & justice 01 natural sciences High Energy Physics - Lattice Hardware and Architecture 0103 physical sciences Curve fitting Statistical physics 010306 general physics Physics - Computational Physics Global optimization Interpolation |
| DOI: | 10.48550/arxiv.0707.2788 |
| Popis: | 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. Comment: 39 pages, 7 figures; uses elsart.cls; version to appear in Comput.Phys.Commun |
| Databáze: | OpenAIRE |
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