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arXiv 1602.00632hep-thgr-qc
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旋量李导数与费米子应力能

Spinor Lie derivatives and Fermion stress-energies

Adam D. Helfer

摘要:

从广义协变性原理导出了费米场的应力能。这是通过发展一个概念的李衍生物的旋量沿任意向量场。一个实质性的理论,这种衍生物首先介绍了科斯曼;在这里,我显示了一个明显的冲突,在这方面的文献是由于不同的定义旋量,并跟踪李导数的英费尔德-范德瓦尔登符号,以及旋量领域正在考虑中,给出了一个更全面的图片的几何形状,并导致费米子应力能量。旋量定义的不同并不影响这里的结果,但在某些量子引力程序和离散对称下的旋量变换中可能很重要。

英文摘要:

Stress-energies for Fermi fields are derived from the principle of general covariance. This is done by developing a notion of Lie derivatives of spinors along arbitrary vector fields. A substantial theory of such derivatives was first introduced by Kosmann; here I show how an apparent conflict in the literature on this is due to a difference in the definitions of spinors, and that tracking the Lie derivative of the Infeld-van der Waerden symbol, as well as the spinor fields under consideration, gives a fuller picture of the geometry and leads to the Fermion stress-energy. The differences in the definitions of spinors do not affect the results here, but could matter in certain quantum-gravity programs and for spinor transformations under discrete symmetries.

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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