特胡夫特顶点再访
The 't Hooft vertex revisited
摘要：
1976年，特胡夫特提出了一种优雅的方法来理解非阿贝尔规范理论中出现的拓扑结构的物理后果。这些影响简要地总结了一个有效的多费米子相互作用。这些旧的论点提供了各种最近和有时有争议的想法之间的联系，包括出现在一些统一模型中的离散手征对称性，夸克质量定义的模糊性，以及格点规范理论中某些模拟算法的缺陷。
英文摘要：
In 1976 't Hooft introduced an elegant approach towards understanding the physical consequences of the topological structures that appear in non-Abelian gauge theories. These effects are concisely summarized in terms of an effective multi-fermion interaction. These old arguments provide a link between a variety of recent and sometimes controversial ideas including discrete chiral symmetries appearing in some models for unification, ambiguities in the definition of quark masses, and flaws with some simulation algorithms in lattice gauge theory.
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