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arXiv · hep-lat/0411006

Lattice QCD with two dynamical flavors of domain wall quarks

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

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 proven to be very effective in the quenched approximation. We work on lattices of size 16^3x32, with a lattice cut-off of a^{-1}\approx 1.7 GeV, and dynamical (or sea) quark masses in the range m_{strange}/2 \simle m_{sea} \simle m_{strange}. 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, B_K. In the latter case we include the effect of non-degenerate quark masses (m_s \neq m_u = m_d), finding B_K(MS-bar, 2 GeV) = 0.495(18).

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Y. Aoki, T. Blum, N. Christ, C. Dawson, K. Hashimoto, T. Izubuchi, J. W. Laiho, L. Levkova, M. Lin, R. Mawhinney, J. Noaki, S. Ohta, K. Orginos, A. Soni. 2004-11-03. Lattice QCD with two dynamical flavors of domain wall quarks. https://doi.org/10.1103/physrevd.72.114505

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