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arXiv physics/0309092physics.class-ph
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电磁场的替代势

Alternative potentials for the electromagnetic field

Shaun N. Mosley

摘要:

电磁场可以用两个与德拜势有关的复势$ α, β,$表示。导出了这些势的演化方程,它们在抛物坐标(导致辐射场)或径向坐标(多极场)中是可分离的。讨论了聚焦波场和平面波场的势函数。根据这些势可以构造出一个守恒的辐射密度,它对于正(负)螺旋度辐射是正(负)的。

英文摘要:

The electromagnetic field can be expressed in terms of two complex potentials $ α, β,$ which are related to the Debye potentials. The evolution equations for these potentials are derived, which are separable either in parabolic coordinates (leading to the radiation fields) or in radial coordinates (multipole fields). Potentials corresponding to focused wave fields as well as plane waves are discussed. A conserved radiation density can be constructed in terms of these potentials, which is positive (negative) for positive (negative) helicity radiation.

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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