Phase transitions in three-dimensional three-state Potts model |
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Authors: | F Fucito A Vulpiani |
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Affiliation: | Istituto di Fisica “G. Marconi”, Università degli Studi, Rome, Italy |
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Abstract: | We have performed a Monte Carlo investigation of the nature of the phase transition in the three-state, three-dimensional Potts model with nearest and next nearest neighbour coupling. We find strong evidence for a first-order phase transition in the case of ferromagnetic coupling. In the case of a first neighbour ferromagnetic coupling and second neighbour antiferromagnetic, there is evidence for a second-order transition. This result supports the idea that a second-order transition can be present in systems which, according to the Landau criterium, should only undergo a first-order transition. |
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