Does macroscopic magnetic monopole contradict physics?

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SUMMARY

The discussion centers on the existence of macroscopic magnetic monopoles and their implications in physics. It references Dirac's assertion regarding microscopic monopoles and highlights the discovery of "spin ice," a material exhibiting quasiparticles that behave like magnetic monopoles. The conversation raises questions about whether these quasiparticles generate magnetic fields and if moving spin ice can produce electromagnetic radiation (EMR).

PREREQUISITES
  • Understanding of quantum theory and its implications on particle physics.
  • Familiarity with condensed matter physics concepts, particularly spin ice materials.
  • Knowledge of quasiparticles and their role in material behavior.
  • Basic principles of electromagnetism, including magnetic fields and electromagnetic radiation.
NEXT STEPS
  • Research the properties and behavior of spin ice materials in condensed matter physics.
  • Explore Dirac's theory on magnetic monopoles and its implications for particle physics.
  • Investigate the generation of electromagnetic radiation by quasiparticles in various materials.
  • Study the experimental evidence for the existence of magnetic monopoles in nature.
USEFUL FOR

Physicists, materials scientists, and students interested in advanced topics in quantum theory and condensed matter physics, particularly those exploring the nature of magnetic monopoles.

liumylife
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I know Dirac had said yes to existence of microscopic monopole by quantum theory, so why not the macroscopic monopole?
 
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Indeed, there's no principle against the existence of magnetic monopoles. In this sense it's a mystery, why there are no elementary magnetic charges in nature.

However, not long ago, one has found a funny material, which behaves like a socalled "spin ice". In this substance one has found collective excitations (quasiparticles) which behaves like magnetic monopoles. There are a lot of such examples in condensed matter physics!
 
OK, since the quasiparticle behaves like monopole, dose it produce magnetic field? Does moving "spin ice" produce EMR?
 

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