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Finite-size corrections to disordered Ising models on random regular graphs
C Lucibello1, F Morone2, G Parisi3
1Dipartimento di Fisica,"Sapienza" University of Rome, Piazzale Aldo Moro 2, I-00185 Rome, Italy.
Abstract:
We derive the analytical expression for the first finite-size correction to the average free energy of disordered Ising models on random regular graphs. The formula can be physically interpreted as a weighted sum over all non-self-intersecting loops in the graph, the weight being the free-energy shift due to the addition of the loop to an infinite tree.
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