Gap domain wall fermions
Gap domain wall fermions
复制标题
间隙域壁费米子
DOI：
10.1103/physrevd.74.034512
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发表时间：
2006
影响因子：
5
通讯作者：
P. Vranas
中科院分区：
文献类型：
--
作者：
P. Vranas
我证明了在QCD的大到中等晶格间距（1到2 GeV）区域壁面费米子（DWF）的手性通过加入两个超临界质量等于负DWF五维质量的标准Wilson费米子而得到显著改善。通过淬火DWF模拟，我发现传递矩阵哈密顿量的特征值谱出现了一个很大的间隙，并且残余质量明显减少。此外，我确认局部拓扑变化仍然是活跃的，并且添加的威尔逊费米子的强子谱在晶格截止点之上，因此是无关紧要的。我认为这一结果也适用于动态DWF，并进一步改善了相关费米子方法的手性。
I demonstrate that the chiral properties of domain wall fermions (DWF) in the large to intermediate lattice spacing regime of QCD, 1 to 2 GeV, are significantly improved by adding to the action two standard Wilson fermions with supercritical mass equal to the negative DWF five-dimensional mass. Using quenched DWF simulations I show that the eigenvalue spectrum of the transfer matrix Hamiltonian develops a substantial gap and that the residual mass decreases appreciatively. Furthermore, I confirm that local topology changing remains active and that the hadron spectrum of the added Wilson fermions is above the lattice cutoff and therefore is irrelevant. I argue that this result should also hold for dynamical DWF and furthermore that it should improve the chiral properties of related fermion methods.