TY - JOUR

T1 - Phase diagram of charged dumbbells

T2 - A random phase approximation approach

AU - Kudlay, Alexander

AU - Ermoshkin, Alexander V.

AU - de la Cruz, Monica Olvera

N1 - Funding Information:
This work was supported by the NIH Grant No. GM62109-02 and NSF Grant No. DMR-0109610. The authors wish to thank E. Luijten, A. Z. Panagiotopoulos, and J. Jiang for sending their simulation data.

PY - 2004

Y1 - 2004

N2 - The phase diagram of the charged hard dumbbell system (hard spheres of opposite unit charge fixed at contact) is obtained with the use of the random phase approximation (RPA). The effect of the impenetrability of charged spheres on charge-charge fluctuations is described by introduction of a modified electrostatic potential. The correlations of ions in a pair are included via a correlation function in the RPA. The coexistence curve is in good agreement with Monte Carlo simulations. The relevance of the theory to the restricted primitive model is discussed.

AB - The phase diagram of the charged hard dumbbell system (hard spheres of opposite unit charge fixed at contact) is obtained with the use of the random phase approximation (RPA). The effect of the impenetrability of charged spheres on charge-charge fluctuations is described by introduction of a modified electrostatic potential. The correlations of ions in a pair are included via a correlation function in the RPA. The coexistence curve is in good agreement with Monte Carlo simulations. The relevance of the theory to the restricted primitive model is discussed.

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U2 - 10.1103/PhysRevE.70.021504

DO - 10.1103/PhysRevE.70.021504

M3 - Article

C2 - 15447493

AN - SCOPUS:42749106315

SN - 1063-651X

VL - 70

SP - 6

JO - Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

JF - Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

IS - 2

ER -