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arXiv physics/0702217physics.class-ph
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不同规范中的电势如何产生相同的延迟电场和磁场

How potentials in different gauges yield the same retarded electric and magnetic fields

Jose A. Heras

摘要:

本文提出了一种简单而系统的方法来说明洛仑兹、库仑、基尔霍夫、速度和时间规中的势如何产生相同的延迟电场和磁场。该方法适当地利用标量势和矢量势的动力学方程,得到两个波动方程,其延迟解导致电场和磁场。这种方法的优点是,它不使用显式表达式的潜力,在上述规范,这通常是简单的获得标量势,但通常难以计算的矢量势。注意到库仑、基尔霍夫和速度规中标量势项的伪特征。强调了Lorenz规范中标量势产生的项的非伪性质。

英文摘要:

This paper presents a simple and systematic method to show how the potentials in the Lorentz, Coulomb, Kirchhoff, velocity and temporal gauges yield the same retarded electric and magnetic fields. The method appropriately uses the dynamical equations for the scalar and vector potentials to obtain two wave equations, whose retarded solutions lead to the electric and magnetic fields. The advantage of this method is that it does not use explicit expressions for the potentials in the above gauges, which are generally simple to obtain for the scalar potential but generally difficult to calculate for the vector potential. The spurious character of the term generated by the scalar potential in the Coulomb, Kirchhoff and velocity gauges is noted. The non spurious character of the term generated by the scalar potential in the Lorenz gauge is emphasized.

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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