We test the validity of some widely used phenomenological criteria for the localization of the fluid-solid transition thresholds against the phase diagrams of particles interacting through the exp-6,inverse-power-law,and Gaussian potentials.We find that one-phase rules give,on the whole,reliable estimates of freezing/melting points.The agreement is ordinarily better for a face-centered-cubic solid than for a body-centered-cubic crystal,even more so in the presence of a pressure-driven reentrant transition of the solid into a denser fluid phase,as found in the Gaussian-core model.
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