Widom-Rowlinson model

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Simulation snapshot of phase separation in two-dimensions.

The Widom-Rowlinson model [1] for mixtures takes the form:

\[ \Phi \left( r_{ij} \right) = 0 \]; if \( i \) and \( j\) are particles of the same species

\[ \Phi \left( r_{ij} \right) = \Phi_{HS}(r_{ij}); \] if \( i \) and \( j\) belong to different species,

where \( \Phi_{HS}(r) \) is the hard sphere intermolecular pair potential.

[edit] Surface tension

The surface tension of the Widom-Rowlinson model has also been studied [2] [3]

[edit] References

  1. B. Widom and J. S. Rowlinson, "New Model for the Study of Liquid–Vapor Phase Transitions", Journal of Chemical Physics 52, pp. 1670-1684 (1970)
  2. E. de Miguel, N. G. Almarza and G. Jackson "Surface tension of the Widom-Rowlinson model", Journal of Chemical Physics 127 034707 (2007)
  3. Yuri Djikaev "The interfacial tension and phase diagram of the Widom-Rowlinson mixture via Monte Carlo simulations", Journal of Chemical Physics 128 014712 (2008)

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