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Title First results from 2+1-Flavor Domain Wall QCD: Mass Spectrum, Topology Change and Chiral Symmetry with $L_s=8$
Abstract We present results for the static interquark potential, light meson and baryon masses, and light pseudoscalar meson decay constants obtained from simulations of domain wall QCD with one dynamical flavour approximating the $s$ quark, and two degenerate dynamical flavours with input bare masses ranging from $m_s$ to $m_s/4$ approximating the $u$ and $d$ quarks. We compare these quantities obtained using the Iwasaki and DBW2 improved gauge actions, and actions with larger rectangle coefficients, on $16^3\times32$ lattices. We seek parameter values at which both the chiral symmetry breaking residual mass due to the finite lattice extent in the fifth dimension and the Monte Carlo time history for topological charge are acceptable for this set of quark masses at lattice spacings above 0.1 fm. We find that the Iwasaki gauge action is best, demonstrating the feasibility of using QCDOC to generate ensembles which are good representations of the QCD path integral on lattices of up to 3 fm in spa
Author(s) David Antonio, Thomas Blum, Kenneth Bowler, Patrick Boyle, Norman Christ, Saul Cohen, Chris Dawson, A. Hart, K. Hashimoto, T. Izubuchi, Balint Joo, Chulwoo Jung, Anthony D. Kennedy, Richard Kenway, S. Li, Huey-Wen Lin, Meifeng Lin, Robert Mawhinney, Christopher Maynard, J. Noaki., Shigemi Ohta, S. Sasaki, Amarjit Soni, Azusa Yamaguchi
Publication Date June 2007
Document Type Journal Article
Primary Institution University of Edinburgh, Edinburgh, Scotland
Affiliation Comp Sci&Tech (CST) Div / Scientific Computing / Scientific Computing
Funding Source
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-IT-07-06 OSTI Number: 919519
LANL Number: hep-lat/0612005 Other Number: DOE/OR/23177-0209
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Journal Article
Journal Name Physical Review D
Refereed Yes
Volume 75
Issue
Page(s) 114501
Attachments/Datasets/DOI Link
Document(s)
JLAB-IT-07-06.pdf (STI Document)
Dataset(s) (none)
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