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Título:
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The compressibility equation for soft-matter liquids
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Autores:
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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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Institute of Physics, 2003-01-15
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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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Effective interactions in soft-matter physics result from a formal contraction of an initial multicomponent system, composed of mesoscopic and small particles, into an effective one-component description. By tracing out in the partition function the degrees of freedom of the small particles, a one-component system of mesoscopic particles interacting with a state-dependent Hamiltonian is found. Although the effective Hamiltonian is not in general pairwise additive, it is usually approximated by a volume term and a pair-potential contribution. In this paper the relation between the structure, for which the volume term plays no role, and the thermodynamics of a fluid of particles interacting with a density-dependent pair potential is analysed. It is shown that the compressibility equation differs from that of atomic fluids. An important consequence is that the infinite-compressibility line derived from the thermodynamics does not coincide with the spinodal line stemming from the divergence of correlations.
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En línea:
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https://eprints.ucm.es/id/eprint/23764/1/F-Tejero06.pdf
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