发表机构
Temple University（天普大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文针对经典电磁学中电荷分布的离散特性，研究点电荷的无穷大自能问题与运动电流环的电偶极矩问题。
AI 中文摘要
经典电磁学（EM）中构成电荷分布和电流的电荷是具有固定有限电荷的点电荷电子，这意味着无法形成真正连续的电荷分布或电流，因为那需要无穷小的电荷。若任意分布中的电子数量非常多，这些分布可近似为连续并应用于许多场景，但分布的离散特性对其他物理效应有重要影响。本文研究其中两种效应：点电荷是否具有无穷大自能，以及运动的电流环是否具有电偶极矩。
英文摘要
The electric charges that make up charge distributions and currents in classical electromagnetism (EM) are point charge electrons with a fixed finite charge. This means that a truly continuous charge distribution or current cannot be formed because that would require infinitesimal charges. If the number of electrons in any distribution is very large, the distributions can be approximately continuous, and can be used in many applications, but the discrete character of the distributions has a major effect on other physical effects. We consider two of those effects in this paper. Does a point charge have infinite self-energy, and does a moving current loop have an electric dipole moment?
CommentsImportant modification of Classical Electromagnetism
