Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/49626
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Type: Conference paper
Title: Non-perturbative Chiral Corrections for Lattice QCD
Author: Thomas, A.
Leinweber, D.
Lu, D.
Citation: NEWS99 : the proceedings of the International Symposium on Nuclear Electro-Weak Spectroscopy for Symmetries in Electro-Weak Nuclear-Processes : in honor of Professor Hiro Ejiri, 9-12 March, 1999 / Hiroshi Toki, Tadafumi Kishimoto, Kichiji Hatanaka & Keiji Takahisa (eds.): pp.124-130
Publisher: World Scientific
Publisher Place: Singapore ; River Edge, NJ
Issue Date: 2002
ISBN: 9812381252
Conference Name: International Symposium on Nuclear Electro-Weak Spectroscopy for Symmetries in Electro-Weak Nuclear-Processes (1999 : Osaka, Japan)
Abstract: We explore the chiral aspects of extrapolation of observables calculated within lattice QCD, using the nucleon magnetic moments as an example. Our analysis shows that the biggest effects of chiral dynamics occur for quark masses corresponding to a pion mass below 600 MeV. In this limited range chiral perturbation theory is not rapidly convergent, but we can develop some understanding of the behaviour through chiral quark models. This model dependent analysis leads us to a simple Pad\'e approximant which builds in both the limits $m_\pi \to 0$ and $m_\pi \to \infty$ correctly and permits a consistent, model independent extrapolation to the physical pion mass which should be extremely reliable.
DOI: 10.1142/9789812776754_0018
Published version: http://dx.doi.org/10.1142/9789812776754_0018
Appears in Collections:Aurora harvest 5
Chemistry and Physics publications

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