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Título:
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Evidence of double criticality in a fluid model with density-dependent interactions
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Autores:
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Almarza, N. G. ;
Lomba, Enrique ;
Ruiz, Guiomar ;
Fernández Tejero, Carlos
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 2001-03-05
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/restrictedAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Termodinámica
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Tipo = Artículo
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Resumen:
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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.
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En línea:
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https://eprints.ucm.es/id/eprint/23767/1/F-Tejero08.pdf
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