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arXiv math-ph/0702044math-phmath.MP
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短程电磁相互作用与磁荷:时空代数还是物理空间代数?

Finite-Range Electromagnetic Interaction and Magnetic Charges: Spacetime Algebra or Algebra of Physical Space?

Carlo Cafaro

摘要:

利用时空代数(STA)和三维物理空间代数(APS)形式,建立了一个新的包含电荷和磁荷的有限程电磁场(EM)理论.在APS形式中详细讨论了洛伦兹、局域规范和EM对偶不变性。此外,还讨论了时空的特征和维数问题。最后,对两种配方进行了比较。STA和APS是同样强大的制定我们的模型,但存在一个全球性的交换单位赝标量的APS制定和随之而来的可能性提供一个几何解释的虚单位在整个经典和量子物理导致我们更喜欢APS的方法。

英文摘要:

A new finite-range electromagnetic (EM) theory containing both electric and magnetic charges constructed using two vector potentials A^{} and Z^{} is formulated in the spacetime algebra (STA) and in the algebra of the three-dimensional physical space (APS) formalisms. Lorentz, local gauge and EM duality invariances are discussed in detail in the APS formalism. Moreover, considerations about signature and dimensionality of spacetime are discussed. Finally, the two formulations are compared. STA and APS are equally powerful in formulating our model, but the presence of a global commuting unit pseudoscalar in the APS formulation and the consequent possibility of providing a geometric interpretation for the imaginary unit employed throughout classical and quantum physics lead us to prefer the APS approach.

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