The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism

6 pages, 4 figures.-- PACS: 64.70.Fx; 65.20.+w; 02.30.Rz; 62.10.+s

Detalles Bibliográficos
Autores: Sarkisov, Gari, Lomba, Enrique
Tipo de recurso: artículo
Fecha de publicación:2005
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/21735
Acceso en línea:http://hdl.handle.net/10261/21735
Access Level:acceso abierto
Palabra clave:Liquid-vapour transformations
Phase diagrams
Isothermal transformations
Compressibility
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spelling The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalismSarkisov, GariLomba, EnriqueLiquid-vapour transformationsPhase diagramsIsothermal transformationsCompressibility6 pages, 4 figures.-- PACS: 64.70.Fx; 65.20.+w; 02.30.Rz; 62.10.+sThe singularities of various liquid-state integral equations derived from the Ornstein–Zernike relation and its temperature derivatives, have been investigated in the liquid–vapor transition region. As a general feature, it has been found that the existence of a nonsolution curve on the vapor side of the phase diagram, on which both the direct and the total correlation functions become complex—with a finite isothermal compressibility—also corresponds to the locus of points where the constant-volume heat capacity diverges, in consonance with a divergence of the temperature derivative of the correlation functions. In contrast, on the liquid side of the phase diagram one finds that a true spinodal (a curve of diverging isothermal compressibilities) is reproduced by the Percus–Yevick and Martynov–Sarkisov integral equations, but now this curve corresponds to states with finite heat capacity. On the other hand, the hypernetted chain approximation exhibits a nonsolution curve with finite compressibilities and heat capacities in which, as temperature is lowered, the former tends to diverge.E.L. acknowledges financial support of the Dirección General de Investigación Científica y Técnica under Grant No. FIS2004-02954-C03-01. This work has been carried out under the auspices of the exchange agreement between the Consejo Superior de Investigaciones Científicas and the Russian Academy of Sciencies, which supported the exchange visits of E.L. and G.S. in the past two years.Peer reviewedAmerican Institute of Physics201020102005info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_650187948 bytesapplication/pdfhttp://hdl.handle.net/10261/21735reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1063/1.1925269info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/217352026-05-22T06:33:51Z
dc.title.none.fl_str_mv The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism
title The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism
spellingShingle The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism
Sarkisov, Gari
Liquid-vapour transformations
Phase diagrams
Isothermal transformations
Compressibility
title_short The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism
title_full The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism
title_fullStr The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism
title_full_unstemmed The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism
title_sort The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism
dc.creator.none.fl_str_mv Sarkisov, Gari
Lomba, Enrique
author Sarkisov, Gari
author_facet Sarkisov, Gari
Lomba, Enrique
author_role author
author2 Lomba, Enrique
author2_role author
dc.subject.none.fl_str_mv Liquid-vapour transformations
Phase diagrams
Isothermal transformations
Compressibility
topic Liquid-vapour transformations
Phase diagrams
Isothermal transformations
Compressibility
description 6 pages, 4 figures.-- PACS: 64.70.Fx; 65.20.+w; 02.30.Rz; 62.10.+s
publishDate 2005
dc.date.none.fl_str_mv 2005
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/21735
url http://hdl.handle.net/10261/21735
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1063/1.1925269
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 87948 bytes
application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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repository.mail.fl_str_mv
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