Lattice QCD with two dynamical flavors of domain wall fermions

Y. Aoki, T. Blum, N. Christ, C. Dawson, K. Hashimoto, T. Izubuchi, John W Laiho, L. Levkova, M. Lin, R. Mawhinney, J. Noaki, S. Ohta, K. Orginos, A. Soni

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We present results from the first large-scale study of two-flavor QCD using domain wall fermions (DWF), a chirally symmetric fermion formulation which has been proven to be very effective in the quenched approximation. We work on lattices of size 163×32, with a lattice cutoff of a-1≈1.7GeV and dynamical (or sea) quark masses in the range mstrange/2 msea mstrange. After discussing the algorithmic and implementation issues involved in simulating dynamical DWF, we report on the low-lying hadron spectrum, decay constants, static quark potential, and the important kaon weak matrix element describing indirect CP violation in the standard model, BK. In the latter case we include the effect of nondegenerate quark masses (ms≠mu=md), finding BKMS̄(2GeV)=0.495(18).

Original languageEnglish (US)
Article number114505
JournalPhysical Review D
Issue number11
StatePublished - Dec 1 2005
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Aoki, Y., Blum, T., Christ, N., Dawson, C., Hashimoto, K., Izubuchi, T., Laiho, J. W., Levkova, L., Lin, M., Mawhinney, R., Noaki, J., Ohta, S., Orginos, K., & Soni, A. (2005). Lattice QCD with two dynamical flavors of domain wall fermions. Physical Review D, 72(11), [114505].