The Field Theory of the q->4+ Potts Model
arXiv:hep-th/0002122 · doi:10.1016/S0370-2693(00)00548-7
Abstract
The q-state Potts model in two dimensions exhibits a first-order transition for q>4. As q->4+ the correlation length at this transition diverges. We argue that this limit defines a massive integrable quantum field theory whose lowest excitations are kinks connecting 4+1 degenerate ground states. We construct the S-matrix of this theory and the two-particle form factors, and hence estimate a number of universal amplitude ratios. These are in very good agreement with the results of extrapolated series in q^(-1/2) as well as Monte Carlo results for q=5.
8 pages, 1 figure; latex
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Cited by in corpus (15)
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