Demixing in binary mixtures of hard hyperspheres

Abstract

The phase behavior of binary fluid mixtures of hard hyperspheres in four and five dimensions is investigated. Spinodal instability is found by using a recent and accurate prescription for the equation of state of the mixture that requires the equation of state of the single component fluid as input. The role played by the dimensionality on the possible metastability of the demixing transition with respect to a fluid-solid transition is discussed. The binodal curves in the pressure--chemical potential representation are seen to lie on a common line, independent of the size ratio

7 pages, including 5 figures. Discussion about metastability rewritten. Universal behavior is also verified for the 3D case. Fig. 4 is new and includes the 3D case; old Fig. 4 becomes new Fig.5. To be published in Europhys. Lett

References in corpus (5)

• Crystallization and phase-separation in non-additive binary hard-sphere mixtures
• Fundamental measure theory for mixtures of parallel hard cubes. II. Phase behavior of the one-component fluid and of the binary mixture
• An equation of state {\em à la} Carnahan-Starling for a five-dimensional fluid of hard hyperspheres
• Depletion induced demixing in polydisperse mixtures of hard spheres
• Critical packing fraction at the phase separation transition in hard-core mixtures

Cited by in corpus (13)

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• Equation of state of a seven-dimensional hard-sphere fluid. Percus-Yevick theory and molecular dynamics simulations
• Virial series for fluids of hard hyperspheres in odd dimensions
• Alternative Approaches to the Equilibrium Properties of Hard-Sphere Liquids
• Percus-Yevick theory for the structural properties of the seven-dimensional hard-sphere fluid
• Comment on "Reverse Brazil Nut Problem: Competition between Percolation and Condensation"
• Multicomponent fluids of hard hyperspheres in odd dimensions
• Demixing can occur in binary hard-sphere mixtures with negative non-additivity
• Rescaled density expansions and demixing in hard-sphere binary mixtures
• Communication: Virial coefficients and demixing in highly asymmetric binary additive hard-sphere mixtures
• Equation of State of Four- and Five-Dimensional Hard-Hypersphere Mixtures
• Fluid-fluid versus fluid-solid demixing in mixtures of parallel hard hypercubes