RT Journal Article
T1 Evidence of double criticality in a fluid model with density-dependent interactions
A1 Almarza, N. G.
A1 Lomba, Enrique
A1 Ruiz, Guiomar
A1 Fernández Tejero, Carlos
AB Evidence of a liquid-liquid equilibrium in simple fluids has recently been exposed for a density-dependent pair potential in the framework of a van der Waals theory. Here this double criticality is investigated by means of computer simulation, a perturbation theory, and integral equation theory. It is found that the critical point estimated from the integral equation thermodynamics is not associated with divergent correlations. To cope with these features, a special simulation procedure, based on the definition of local densities, is devised. Monte Carlo calculations confirm the existence of two critical points, in agreement with the predictions of perturbation theory.
PB American Physical Society
SN 0031-9007
YR 2001
FD 2001-03-05
LK https://hdl.handle.net/20.500.14352/58869
UL https://hdl.handle.net/20.500.14352/58869
LA eng
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NO © 2001 The American Physical Society. We acknowledge financial support from the Dirección General de Enseñanza Superior e Investigación Científica (DGESCYT) under Grants No. PB98-0673-C02-02 (N.G. A.), No. PB97-0258-C02-02 (E. L.), and No. PB97-0004-C03-03 (G. R. and C. F. T.).
NO Dirección General de Enseñanza Superior e Investigación Científica (DGESCYT)
DS Docta Complutense
RD 2 may 2024