Three-phase equilibrium in a binary hard-core lattice model

Three-phase equilibrium in a binary hard-core lattice model.

] 2 5 M ar 1 99 9 Three - phase point in a binary hard - core lattice model ?

Using Monte Carlo simulation, Van Duijneveldt and Lekkerkerker [Phys. Rev. Lett. 71, 4264 (1993)] found gas–liquid–solid behaviour in a simple two-dimensional lattice model with two types of hard particles. The same model is studied here by means of numerical transfer matrix calculations, focusing on the finite size scaling of the gaps between the largest few eigenvalues. No evidence for a gas–...

Circle Theorem for Hard-Core Binary Lattice Gases

Two-componen t lattice gases o f the general type introduced by Widom and Rowlinsonr and their con t inuum analog have been o f considerable interest in the study of phase transitions and cooperat ive phenomena. ~2-7) For the simplest case o f two symmetric components A and B with repulsive hard cores between unlike particles and a smaller (point) hard core between like particles, a demixing ph...

Supersolid phase of hard-core bosons on a triangular lattice.

We study properties of the supersolid phase observed for hard-core bosons on the triangular lattice near half-integer filling factor, and the phase diagram of the system at finite temperature. We find that the solid order is always of the (2m, -m, -m) with m changing discontinuously from positive to negative values at half filling, in contrast with phases observed for Ising spins in a transvers...

Phase diagram of a binary symmetric hard-core Yukawa mixture.

We assess the accuracy of the self-consistent Ornstein-Zernike approximation for a binary symmetric hard-core Yukawa mixture by comparison with Monte Carlo simulations of the phase diagrams obtained for different choices of the ratio alpha of the unlike-to-like interactions. In particular, from the results obtained at alpha=0.75 we find evidence for a critical endpoint in contrast to recent stu...