Lattice QCD with two dynamical flavors of domain wall quarks

Details Lattice QCD with two dynamical flavors of domain wall quarks Lattice QCD with two dynamical flavors of domain wall quarks

2004-11-03

arxiv.org/abs/hep-lat/0411006v1

Phys.Rev.D72:114505,2005

Physics

High Energy Physics

High Energy Physics - Lattice

99 pages, 38 figures

Scientific paper

10.1103/PhysRevD.72.114505

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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