Asymptotic decay of pair correlations in a Yukawa fluid

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dc.creatorHopkins, P.
dc.creatorArcher, A. J.
dc.creatorEvans, R.
dc.date2005-12-16
dc.date.accessioned2026-07-07T07:38:59Z
dc.date.available2026-07-07T07:38:59Z
dc.descriptionWe analyse the $r \to \infty$ asymptotic decay of the total correlation function, $h(r)$, for a fluid composed of particles interacting via a (point) Yukawa pair potential. Such a potential provides a simple model for dusty plasmas. The asymptotic decay is determined by the poles of the liquid structure factor in the complex plane. We use the hypernetted-chain closure to the Ornstein-Zernike equation to determine the line in the phase diagram, well-removed from the freezing transition line, where crossover occurs in the ultimate decay of $h(r)$, from monotonic to damped oscillatory. We show: i) crossover takes place via the same mechanism (coalescence of imaginary poles) as in the classical one-component plasma and in other models of Coulomb fluids and ii) leading-order pole contributions provide an accurate description of $h(r)$ at intermediate distances $r$ as well as at long range.
dc.description5 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0512391
dc.identifierhttp://arxiv.org/abs/cond-mat/0512391
dc.identifierPhys. Rev. E 71 027401-1 to 4 (2005)
dc.identifierdoi:10.1103/PhysRevE.71.027401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/121292
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleAsymptotic decay of pair correlations in a Yukawa fluid
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