Lattice QCD with two dynamical flavors of domain wall quarks
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).
Keywords
Cite
@article{arxiv.hep-lat/0411006,
title = {Lattice QCD with two dynamical flavors of domain wall quarks},
author = {Y. Aoki and T. Blum and N. Christ and C. Dawson and K. Hashimoto and T. Izubuchi and J. W. Laiho and L. Levkova and M. Lin and R. Mawhinney and J. Noaki and S. Ohta and K. Orginos and A. Soni},
journal= {arXiv preprint arXiv:hep-lat/0411006},
year = {2009}
}
Comments
99 pages, 38 figures