Abstract
An investigation is made of how a recently foundq-state generalization of the hard-square model fits into a more general phase diagram. The investigation is done by Monte Carlo and series expansion methods. Evidence is presented that the one-dimensional manifold of parameters along which the model is exactly solvable represents a line of first-order phase transitions.
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Haas, T.M. A numerical study of the phase structure of the q-state generalization of the hard-square model. J Stat Phys 54, 201–219 (1989). https://doi.org/10.1007/BF01023479
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DOI: https://doi.org/10.1007/BF01023479