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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Classical electromagnetism as a consequence of Coulomb's law, special relativity and Hamilton's principle and its relationship to quantum electrodynamics
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Classical electromagnetism as a consequence of Coulomb's law, special relativity and Hamilton's principle and its relationship to quantum electrodynamics

机译：库仑定律，相对论和汉密尔顿原理的经典电磁学及其与量子电动力学的关系

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摘要

It is demonstrated how all the mechanical equations of classical electromagnetism (CEM) may be derived from only Coulomb's inverse square force law, special relativity and Hamilton's principle. The instantaneous nature of the Coulomb force in the centre-of-mass frame of two interacting charged objects, mediated by the exchange of space-like virtual photons, is predicted by quantum electrodynarnics (QED). The interaction Lagrangian of QED is shown to be identical, in the appropriate limit, to the potential energy term in the Lorentz-invariant Lagrangian of CEM. A comparison is made with the Feynman-Wheeler action-at-a-distance formulation of CEM.
机译：证明了如何仅从库仑逆平方力定律，相对论和汉密尔顿原理中导出所有经典电磁（CEM）力学方程。量子电动力学（QED）预测了通过相互作用的类空虚光子的交换介导的两个相互作用的带电物体的质心框架中库仑力的瞬时性质。 QED的相互作用拉格朗日在适当的范围内显示为与CEM的Lorentz不变拉格朗日中的势能项相同。将CEM的Feynman-Wheeler远距离作用公式进行了比较。

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