Dynamical density functional theory: phase separation in a cavity and the influence of symmetry

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dc.creatorArcher, A. J.
dc.date2005-09-06
dc.date.accessioned2026-07-07T07:38:58Z
dc.date.available2026-07-07T07:38:58Z
dc.descriptionConsider a fluid composed of two species of particles, where the interparticle pair potentials $u_{11} = u_{22} \neq u_{12}$. On confining an equal number of particles from each species in a cavity, one finds that the average one body density profiles of each species are constrained to be exactly the same due to the symmetry, when both external cavity potentials are the same. For a binary fluid of Brownian particles interacting via repulsive Gaussian pair potentials that exhibits phase separation, we study the dynamics of the fluid one body density profiles on breaking the symmetry of the external potentials, using the dynamical density functional theory of Marconi and Tarazona [{\it J. Chem. Phys.}, {\bf 110}, 8032 (1999)]. On breaking the symmetry we see that the fluid one body density profiles can then show the phase separation that is present.
dc.description7 pages, 4 figures. Accepted for the proceedings of the Liquid Matter conference 2005, to be publication in J. Phys.: Condens. Matter
dc.identifierhttps://arxiv.org/abs/cond-mat/0509135
dc.identifierhttp://arxiv.org/abs/cond-mat/0509135
dc.identifierJ. Phys.: Condens. Matter 17 S3253 (2005)
dc.identifierdoi:10.1088/0953-8984/17/45/009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/121288
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleDynamical density functional theory: phase separation in a cavity and the influence of symmetry
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