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https://hdl.handle.net/2440/17557
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Type: | Conference paper |
Title: | Extrapolation of lattice QCD results beyond the power-counting regime |
Author: | Leinweber, D. Thomas, A. Young, R. |
Citation: | Nuclear Physics A, 2005 / Guidal, M., Kunne, F., Pire, B., Soyeur, M. (ed./s), vol.755, iss.1-4, pp.59C-70C |
Publisher: | Elsevier Science BV |
Publisher Place: | PO Box 211 Amsterdam Netherlands 1000 AE |
Issue Date: | 2005 |
ISSN: | 0375-9474 1873-1554 |
Conference Name: | International Conference on the Structure of Baryons (13 Jun 2005 - 29 Oct 2004 : France) |
Editor: | Guidal, M. Kunne, F. Pire, B. Soyeur, M. |
Statement of Responsibility: | D.B. Leinweber, A.W. Thomas and R.D. Young |
Abstract: | Resummation of the chiral expansion is necessary to make accurate contact with current lattice simulation results of full QCD. Resummation techniques including relativistic formulations of chiral effective field theory and finite-range regularization (FRR) techniques are reviewed, with an emphasis on using lattice simulation results to constrain the parameters of the chiral expansion. We illustrate how the chiral extrapolation problem has been solved and use FRR techniques to identify the power-counting regime (PCR) of chiral perturbation theory. To fourth-order in the expansion at the 1% tolerance level, we find 0 ≤ mπ ≤ 0.18 GeV for the PCR, extending only a small distance beyond the physical pion mass. © 2005 Elsevier B.V. All rights reserved. |
Description: | Copyright © 2005 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.nuclphysa.2005.03.024 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/505715/description#description |
Published version: | http://dx.doi.org/10.1016/j.nuclphysa.2005.03.024 |
Appears in Collections: | Aurora harvest 6 Special Research Centre for the Subatomic Structure of Matter publications |
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