arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1007.0285hep-lathep-ph
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晶格上的手征费米子

Chiral Fermions on the Lattice

Wolfgang Bietenholz

摘要:

在上个世纪,手征费米子的非微扰正则化是一个长期存在的问题。我们回顾这个问题是如何最终克服了一个修改后的,但确切的手征对称性的晶格形式的制定。这也为格点规范组态的拓扑荷提供了一个合理的定义。我们说明了各种应用QCD的p-,的的δ-和制度,模拟结果现在可以与随机矩阵理论和手征微扰理论。后者包含低能常数作为自由参数,我们从QCD的第一性原理对它们进行了评价。

英文摘要:

In the last century the non-perturbative regularization of chiral fermions was a long-standing problem. We review how this problem was finally overcome by the formulation of a modified but exact form of chiral symmetry on the lattice. This also provides a sound definition of the topological charge of lattice gauge configurations. We illustrate a variety of applications to QCD in the p-, the epsilon- and the delta-regime, where simulation results can now be related to Random Matrix Theory and Chiral Perturbation Theory. The latter contains Low Energy Constants as free parameters, and we comment on their evaluation from first principles of QCD.

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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