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arXiv 0709.4110hep-lat
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全QCD的对数链路拖尾

Logarithmic link smearing for full QCD

Stephan Durr

摘要:

基于矩阵对数,提出了一种基于李代数的格点场论规范链光滑化方法。有或没有超三次嵌套,这种EML/HYL涂抹产生的脂肪链接是可微的w.r.t.原来的那些。这对于定义可以用HMC型算法模拟的UV过滤(“胖链接”)费米子作用是必不可少的。研究了这种涂抹效应对猝灭QCD中斑的分布和树能级O(a)改进的三叶草费米子的剩余质量的影响。

英文摘要:

A Lie-algebra based recipe for smoothing gauge links in lattice field theory is presented, building on the matrix logarithm. With or without hypercubic nesting, this LOG/HYL smearing yields fat links which are differentiable w.r.t. the original ones. This is essential for defining UV-filtered ("fat link") fermion actions which may be simulated with a HMC-type algorithm. The effect of this smearing on the distribution of plaquettes and on the residual mass of tree-level O(a)-improved clover fermions in quenched QCD is studied.

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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