An edge-bicolored graph approach to the Ising model on random regular graphs.

First Authors Michael Borinsky
Authors Michael Borinsky, Shiyue Ren, Maximilian Wiesmann
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Last Authors Maximilian Wiesmann
Journal Name ArXiv (ArXiv)
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Article Number arXiv:2607.07867
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Online Publication Date 2026-07-08
Abstract We give an exact solution of the ferromagnetic Ising model on a random regular graph ensemble via analytic combinatorics. Expressing the partition function as the generating function of labeled edge-bicolored graphs, we obtain the free energy in the thermodynamic limit from the asymptotic enumeration of these graphs. A simple analysis of the resulting formula reveals a second-order phase transition with critical exponents of the mean-field universality class.
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Alternative Full Text URL https://arxiv.org/abs/2607.07867
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Created By thuem
Added Date 2026-07-10
Last Edited By thuem
Last Edited Date 2026-07-10 16:33:42.451
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