Does macroscopic magnetic monopole contradict physics?

In summary, the conversation discusses the possibility of the existence of magnetic monopoles and the recent discovery of quasiparticles that behave like monopoles in a substance called "spin ice". The existence of these quasiparticles raises questions about the production of magnetic fields and electromagnetic radiation.
  • #1
liumylife
11
0
I know Dirac had said yes to existence of microscopic monopole by quantum theory, so why not the macroscopic monopole?
 
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  • #2
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!
 
  • #3
OK, since the quasiparticle behaves like monopole, dose it produce magnetic field? Does moving "spin ice" produce EMR?
 

1. What is a macroscopic magnetic monopole?

A macroscopic magnetic monopole is a hypothetical particle that would have only one magnetic pole, either a north or a south pole, unlike regular magnets which have both.

2. Why is the existence of a macroscopic magnetic monopole controversial?

The existence of a macroscopic magnetic monopole is controversial because it contradicts one of the fundamental laws of physics, known as Gauss's law, which states that magnetic field lines must always form closed loops, making it impossible for a single magnetic pole to exist.

3. How have scientists attempted to detect macroscopic magnetic monopoles?

Scientists have attempted to detect macroscopic magnetic monopoles through various experiments, such as studying cosmic rays and high-energy collisions, but so far no conclusive evidence has been found.

4. What are the potential implications of the discovery of a macroscopic magnetic monopole?

The discovery of a macroscopic magnetic monopole would revolutionize our understanding of electromagnetism and could potentially lead to the development of new technologies. It would also have significant implications for our understanding of the universe and the laws of physics.

5. Is there any evidence to support the existence of macroscopic magnetic monopoles?

While there is currently no definitive evidence for the existence of macroscopic magnetic monopoles, some theoretical models and experimental results have suggested the possibility. However, further research is needed to confirm their existence.

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