3D bond-diluted 4-state Potts model: a Monte Carlo study*
نویسنده
چکیده
We report on a Monte Carlo study of the three-dimensional bond-diluted 4-state Potts model which, in the pure case, undergoes a strong first-order phase transition. Subject to quenched, random disorder one expects a softening to a continuous transition from a certain disorder strength on. Employing a combination of cluster algorithms, multicanonical methods and reweighting techniques, we obtain strong numerical evidence for the existence of a tricritical point separating the firstand second-order regimes and give an estimate of its location.
منابع مشابه
Influence of dilution on the strong first-order phase transition of the 3D 4-state Potts model
We investigate the phase diagram of the bond-diluted three-dimensional 4-state Potts model which undergoes a strong firstorder phase transition in the pure case. We used standard large-scale Monte Carlo simulations with a cluster algorithm coupled to multicanonical methods in the regime of low dilution where the transition is supposed to be first order. We present strong numerical evidence for ...
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