For nearly a century, whether magnetic monopoles exist has been a topic of ongoing debate within the physics community, touching on the core of electromagnetic theory. In classical electromagnetism, conduction currents and displacement currents are considered the sources of magnetic fields. Upon in-depth exploration, it was discovered that there exists a special “equivalent internal circulation” in ferromagnetic materials, which, together with conduction current and displacement current, constitute the source of all magnetism. This discovery challenges conventional wisdom, adding a new dimension to our understanding of the nature of magnetism. Further research proposes that the essence of magnetism lies in the electric field excited by the motion of charges relative to an observer—a dynamic electric field characterized by external rotation, which corresponds to the fundamental properties of the static electric field. This is termed the dynamic external rotating electric field (DEREF). The concept and theory of the DEREF expand the fourth equation of Maxwell’s differential form, establishing asymmetric relationship between electricity and magnetism. This provides a new perspective for exploring the existence of magnetic monopoles. The introduction of this theory suggests that the prediction of magnetic monopoles should be reconsidered in the context of robust electromagnetic theory, potentially having far-reaching implications for cosmology, quantum physics, and more.
Wei-Min et al. (Fri,) studied this question.