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arXiv 1502.05607hep-thgr-qcmath-phmath.MP
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任意维费米子的自旋基不变性

Spin-base invariance of Fermions in arbitrary dimensions

Stefan Lippoldt

摘要:

将自旋基不变性的概念推广到任意整数维$d \geq 2$。我们发现了自旋连接作为Dirac矩阵的函数的显式公式,揭示了Vielbein形式主义中隐藏的自旋基不变性,并从第一性原理给出了这种对称性的详细动机。对于狄拉克矩阵,甚至对于非线性连接的度规,我们构造了维尔拜因的共同洛伦兹对称规范。在某些标准下,它构成了最简单的规范,这说明了为什么这个规范如此有用。

英文摘要:

The concept of spin-base invariance is extended to arbitrary integer dimension $d \geq 2$. Explicit formulas for the spin connection as a function of the Dirac matrices are found. We disclose the hidden spin-base invariance of the vielbein formalism and give a detailed motivation for this symmetry from first principles. The common Lorentz symmetric gauge for the vielbein is constructed for the Dirac matrices, even for metrics which are not linearly connected. Under certain criteria, it constitutes the simplest possible gauge, demonstrating why this gauge is so useful.

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