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arXiv 1808.09601hep-ph
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反常离散味对称与畴壁问题

Anomalous Discrete Flavor Symmetry and Domain Wall Problem

So Chigusa, Kazunori Nakayama

摘要:

离散味对称性经常被用来解释夸克/轻子质量和混合。然而,它的自发破缺导致了畴壁的出现,这对宇宙学来说是个问题。我们考虑了在色SU(3)下离散味对称是反常的,从而分裂简并离散真空的能级作为畴壁问题的解的可能性.我们发现,在大多数已知的味对称模型中,QCD反常效应只能部分地消除简并,仍然存在简并真空。

英文摘要:

Discrete flavor symmetry is often introduced for explaining quark/lepton masses and mixings. However, its spontaneous breaking leads to the appearance of domain walls, which is problematic for cosmology. We consider a possibility that the discrete flavor symmetry is anomalous under the color SU(3) so that it splits the energy levels of degenerate discrete vacua as a solution to the domain wall problem. We find that in most known models of flavor symmetry, the QCD anomaly effect can only partially remove the degeneracy and there still remain degenerate vacua.

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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