Mean-field theory?

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I already read wikipedia, but I still don’t get it. Please give me more intuitive explanation and examples. How does it work?

You can throw math at me, I can deal with math. But don’t assume I know anything else.

Not sure about the flair. Any flairs could work, so I just put Mathematics to be general.

In: 0

If you have a system that is very complex, say QED where a lot of waves are interacting and and each interaction has variable components, you can use Mean-Field theory to make things simpler and easier to work with.

Example.
If A interacts with B. and both A and B have a value that changes between 1 and 10. We can simplify the equations by taking the average (mean) value of A and B ( our fields ) and just use those numbers.

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So its just:

A=5 interacting with B=5.