Numerical simulations reveal continuously varying critical exponents in the dilute Baxter-Wu model that cross over to first-order behavior at strong crystal fields, with central charge near 1.
Assuming a second-order tran- sition for fixed∆≤1, we locate the crossing point TM,M+3 of the scaled correlation length,ξ M /M≡ [Mln(λ 0/λ1)]−1, between strips of widthsMandM+ 3
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Crossover and universality breaking in the dilute Baxter-Wu model
Numerical simulations reveal continuously varying critical exponents in the dilute Baxter-Wu model that cross over to first-order behavior at strong crystal fields, with central charge near 1.