First results from 2+1-Flavor Domain Wall QCD: Mass Spectrum, Topology Change and Chiral Symmetry with $L_s=8$

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dc.creatorAntonio, D. J.
dc.creatorBlum, T.
dc.creatorBowler, K. C.
dc.creatorBoyle, P. A.
dc.creatorChrist, N. H.
dc.creatorCohen, S. D.
dc.creatorClark, M. A.
dc.creatorDawson, C.
dc.creatorHart, A.
dc.creatorHashimoto, K.
dc.creatorIzubuchi, T.
dc.creatorJoó, B.
dc.creatorJung, C.
dc.creatorKennedy, A. D.
dc.creatorKenway, R. D.
dc.creatorLi, S.
dc.creatorLin, H. W.
dc.creatorLin, M. F.
dc.creatorMawhinney, R. D.
dc.creatorMaynard, C. M.
dc.creatorNoaki, J.
dc.creatorOhta, S.
dc.creatorSasaki, S.
dc.creatorSoni, A.
dc.creatorTweedie, R. J.
dc.creatorYamaguchi, A.
dc.date2006-12-05
dc.date2006-12-21
dc.date.accessioned2026-07-07T11:01:54Z
dc.date.available2026-07-07T11:01:54Z
dc.descriptionWe 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 spatial extent with lattice spacings in the range 0.09-0.13 fm. Despite large residual masses and a limited number of sea quark mass values with which to perform chiral extrapolations, our results for light hadronic physics scale and agree with experimental measurements within our statistical uncertainties.
dc.descriptionRBC and UKQCD Collaborations. 82 pages, 34 figures Typos corrected
dc.identifierhttps://arxiv.org/abs/hep-lat/0612005
dc.identifierhttp://arxiv.org/abs/hep-lat/0612005
dc.identifierPhys.Rev.D75:114501,2007
dc.identifierdoi:10.1103/PhysRevD.75.114501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188092
dc.subjectHigh Energy Physics - Lattice
dc.titleFirst results from 2+1-Flavor Domain Wall QCD: Mass Spectrum, Topology Change and Chiral Symmetry with $L_s=8$
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