标题： 带有两个动态味的域墙夸克格点QCD 显示英文标题

标题： Lattice QCD with two dynamical flavors of domain wall quarks

摘要： 我们报告了使用域墙费米子（DWF）进行的首次大规模双味QCD研究的结果，这是一种手征对称的费米子公式，已在冻结近似中被证明非常有效。 我们在16^3x32大小的格点上进行研究，格点截断为a^{-1}\approx 1.7 GeV，并且动态（或海）夸克质量范围为m_{奇怪的}/2 \simle m_{海} \simle m_{奇怪的}。 在讨论了模拟动态DWF涉及的算法和实现问题之后，我们报告了低能介子谱、衰减常数、静态夸克势以及描述标准模型中间接CP破坏的重要K介子弱矩阵元B_K。 在后一种情况下，我们考虑非简并夸克质量（m_s \neq m_u = m_d）的影响，得到 B_K(MS-bar, 2 GeV) = 0.495(18)。 显示英文摘要

摘要： 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).