arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.2597hep-lat
收藏

单圈能级的最小加倍费米子

Minimally doubled fermions at one-loop level

Stefano Capitani, Johannes Weber, Hartmut Wittig

摘要:

Nielsen-Ninomiya no-go定理排除了在有限晶格间距、正确的连续极限和局域相互作用下的单个费米子自由度以及标准的手征对称性。最小加倍费米子作用量的类恰好具有两个手征模。最近的兴趣,这些行动已经引发了调查的费米行动定义的“超钻石”晶格。由于必须显式破缺超立方对称性,辐射修正产生了相关算子和边缘算子的混合,这些算子在连续QCD中应该消失。这些不能避免,必须考虑到特别是一个特殊的波函数重整和添加剂动量重整。在一个循环水平的自能,本地双线性和保守的矢量和轴向矢量电流的重正化性能的Borici-Creutz和Karsten-Wilczek行动。这两种行动之间的明显差异和相似之处进行了阐述。

英文摘要:

Single fermionic degrees of freedom together with standard chiral symmetry at finite lattice spacing, correct continuum limit and local interactions only are precluded by the Nielsen-Ninomiya no-go theorem. The class of minimally doubled fermion actions exhibits exactly two chiral modes. Recent interest in these actions has been sparked by the investigation of fermionic actions defined on "hyperdiamond" lattices. Due to the necessity of breaking hypercubic symmetry explicitly, radiative corrections generate operator mixings with relevant and marginal operators that should vanish in continuum QCD. These cannot be avoided and must be taken into account in particular by a peculiar wave-function renormalisation and additive momentum renormalisation. Renormalisation properties at one-loop level of the self-energy, local bilinears and conserved vector and axial-vector currents are presented for Borici-Creutz and Karsten-Wilczek actions. Distinct differences and similarities between both actions are elucidated.

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。

↑