Phase behaviour of attractive and repulsive ramp fluids: integral equation and computer simulation studies

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dc.creatorLomba, E.
dc.creatorAlmarza, N. G.
dc.creatorMartin, C.
dc.creatorMcBride, C.
dc.date2007-03-20
dc.date.accessioned2026-07-07T09:23:23Z
dc.date.available2026-07-07T09:23:23Z
dc.descriptionUsing computer simulations and a thermodynamically self consistent integral equation we investigate the phase behaviour and thermodynamic anomalies of a fluid composed of spherical particles interacting via a two-scale ramp potential (a hard core plus a repulsive and an attractive ramp) and the corresponding purely repulsive model. Both simulation and integral equation results predict a liquid-liquid de-mixing when attractive forces are present, in addition to a gas-liquid transition. Furthermore, a fluid-solid transition emerges in the neighbourhood of the liquid-liquid transition region, leading to a phase diagram with a somewhat complicated topology. This solidification at moderate densities is also present in the repulsive ramp fluid, thus preventing fluid-fluid separation.
dc.description29 pages, 10 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0703509
dc.identifierhttp://arxiv.org/abs/cond-mat/0703509
dc.identifierJournal of Chemical Physics volume 126, 244510 (2007)
dc.identifierdoi:10.1063/1.2748043
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/155713
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titlePhase behaviour of attractive and repulsive ramp fluids: integral equation and computer simulation studies
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