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I found the following quote in this paper:

Wilson, Kenneth G. "The renormalization group and critical phenomena." Reviews of Modern Physics 55.3 (1983): 583.

Later, Jon Mathews explained some of Feynman's tricks for reproducing the solution for the two-dimensional Ising model. I didn't follow what Jon was saying ...

Is there somewhere one can read about what Feynman tricks this quote is referring to?

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  • $\begingroup$ My memory is that Feynman's book on Statistical Mechanics had a chapter on the Ising model and Onsager's solution, so I would guess in there $\endgroup$ – By Symmetry Sep 26 '18 at 14:08
  • $\begingroup$ @BySymmetry Yes! I have copy with me and I see a derivation of the Onsager's solution in section 5.4. You can post an answer if you like. I'll wait a bit to accept it in case someone else finds another reference. $\endgroup$ – becko Sep 26 '18 at 14:28

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