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Series Expansion and CAM Study of the Nonuniversal Behavior of the Symmetric 16-Vertex Model
Preview AbstractThe phase diagram and the critical indices are investigated for the symmetric 16-vertex model on the square lattice by combining a variational series expansion and the coherent anomaly method. The nonuniversal critical exponents smoothly interpolate between two exactly solvable cases, namely the Baxter eight-vertex model and the Ising model.