Coulomb force between two Dirac monopoles

Alberto G. Rojo

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arXiv · 2511.01889

Coulomb force between two Dirac monopoles

Alberto G. Rojo

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Abstract

The model of magnetic monopoles that was proposed by Paul Dirac in 1931 has long been a subject of theoretical interest in physics because of its potential to explain the quantization of electric charge. While much attention has been given to non-Dirac monopoles, Dirac's model, which involves an infinitely thin solenoid known as a Dirac string, presents subtleties in the interaction between monopoles. In this paper, we show that the force between two Dirac monopoles obeys a Coulomb-like interaction law. This derivation offers an instructive exercise in fundamental electromagnetism concepts and is appropriate for undergraduate and early graduate-level students.

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Alberto G. Rojo. 2025-10-25. Coulomb force between two Dirac monopoles. https://arxiv.org/abs/2511.01889

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