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本文讨论了电磁场的结构。作者从变分原理导出了麦氏方程蛆,同时又阐述了电磁场是规范场和电磁势是U(1)丛上的联络这两个近代观点。通过把麦氏方程组表示成外微分形式,作者得到了罗仑兹协变的电磁场方程组。从在不单连通的底流形上的U(1)丛上存在不同的联络这一事实出发,作者得出了Aha-ranov-Bohm效应。最后,考虑到麦氏方程组对(?)和(?)的对称性,还讨论了磁单极问题。
This article discusses the structure of the electromagnetic field. The author derives the Maxwell equation maggot from the principle of variational principle, and at the same time expounds the two modern viewpoints that the electromagnetic field is the gauge field and the electromagnetic potential is the contact on the U (1) plexus. By representing the Maxwell’s equations as an extrinsic differential form, the authors obtain the Lorentz covariant electromagnetic field equations. Starting from the fact that there is a distinct connection between the U (1) plexuses in the not connected meso manifolds, the authors arrive at the Aha-ranov-Bohm effect. Finally, considering the symmetry of (?) And (?) Of the Markov equation, the problem of magnetic monopole is also discussed.