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arXiv 2108.09647hep-th
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有质量费米子的手征相位与旋量分类

Chiral phases for massive fermions and spinor classifications

Cheng-Yang Lee

AI总结:

该论文研究Lounesto分类中正则旋量的两个手征相位自由度,通过合适取值得到所有正则旋量类别,提出标准模型费米子手征相位是新物理参数,指出轻子相位无法在弱相互作用中测量,夸克相位或相同,测量跨代相位需超出标准模型的相互作用。

摘要:

我们研究Lounesto分类中正则旋量的物理性质,这类旋量通过引入两个手征相位构建。一个是选择γ^μ矩阵时的自由度,该自由度使洛伦兹生成元保持不变;另一个是有质量自旋1/2场允许的自由度,不受庞加莱对称性和定域性约束。通过选取这两个相位的合适值,我们得到了所有类别的正则旋量。对于狄拉克费米子,两个相位相等。我们认为,标准模型费米子的手征相位是一组新的物理参数,轻子的手征相位无法在弱相互作用中测量,而夸克的相位被推测为相同。总体而言,测量不同费米子代之间的相位需要超出标准模型的相互作用。

英文摘要:

We explore the physics of regular spinors in the Lounesto classification. These spinors are constructed by introducing two chiral phases. One is a degree of freedom present in choosing the $γ^μ$ matrices that leaves the Lorentz generators invariant. Another is a degree of freedom allowed by the massive spin-half field that is unconstrained by Poincaré symmetry and locality. By choosing appropriate values of the two phases, we obtain all the classes of regular spinors. For the Dirac fermions, both phases are equal. We argue that the chiral phase of the Standard Model fermions is a new set of physical parameter. We find, the lepton chiral phases cannot be measured within the weak interaction. For quarks, their phases are conjectured to be identical. In general, to measure the phases between different fermionic generations would require interactions beyond the Standard Model.

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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