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arXiv 0706.0218hep-lat
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畴壁费米子手征外推的未来

Future of Chiral Extrapolations with Domain Wall Fermions

Stephen R. Sharpe

摘要:

我讨论了晶格间距,a,夸克质量,m,盒子大小,L,特别是剩余质量,m_res的约束,这样就可以成功地计算现象学有趣的量使用域壁费米子(BFQ)。对a、m和L的约束在很大程度上与其他改进的费米子离散化是相同的,我强调的是,改进的手征对称性并没有消除对晶格参数范围很大的模拟的需要。关于m_res,我比较了手征对称性破缺与Wilson费米子破缺的分析,强调了在每个手征对称性破缺效应减少一个公因子的情况下,手征对称性破缺优于简单的Wilson费米子.然后,我讨论了非零的m_res的影响,既对一般的强子量,和矩阵元素,涉及混合与低维运营商。

英文摘要:

I discuss the constraints on the lattice spacing, a, the quark masses, m, the box size, L, and particularly the residual mass, m_res, such that one can successfully calculate phenomenologically interesting quantities using Domain Wall fermions (DWF). The constraints on a, m, and L are largely common with other improved fermion discretizations, and I emphasize that the improved chiral symmetry of DWF does not remove the need for simulations with a significant range of lattice parameters. Concerning m_res, I compare the analysis of chiral symmetry breaking to that with Wilson fermions, emphasizing that DWF are better than simply Wilson fermions with each chiral symmetry breaking effect reduced by a common factor. I then discuss the impact of non-zero m_res both on generic hadronic quantities, and on matrix elements which involve mixing with lower dimension operators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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