Widom-Rowlinson model

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The Widom-Rowlinson model (Ref. 1) for mixtures takes the form:

; if and are particles of the same species
if and belong to different species,

with is the hard sphere pair potential

References

  1. B. Widom and J. S. Rowlinson, "New Model for the Study of Liquid–Vapor Phase Transitions", J. Chem. Phys. 52, pp. 1670-1684 (1970)