Monte Carlo simulations show the Ashkin-Teller critical line on the Union-Jack lattice splits into two BKT boundaries enclosing an emergent critical phase with power-law magnetization decay and finite correlation-length ratio.
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Generalized coherent information acts as a sharp phase-transition indicator over the entire p-T plane in the 2D ±J random-bond Ising model, yielding a high-precision multicritical point estimate p_c=0.1092212(4) with reduced finite-size effects.
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Emergent critical phases of the Ashkin-Teller model on the Union-Jack Lattice
Monte Carlo simulations show the Ashkin-Teller critical line on the Union-Jack lattice splits into two BKT boundaries enclosing an emergent critical phase with power-law magnetization decay and finite correlation-length ratio.
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Revisiting Nishimori multicriticality through the lens of information measures
Generalized coherent information acts as a sharp phase-transition indicator over the entire p-T plane in the 2D ±J random-bond Ising model, yielding a high-precision multicritical point estimate p_c=0.1092212(4) with reduced finite-size effects.