Beyond the pair-potential model of fluids at the liquid-vapor critical point

Raymond E. Goldstein, Alberto Parola, N. W. Ashcroft, M. W. Pestak, M. H.W. Chan, J. R. De Bruyn, D. A. Balzarini

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Abstract

Evidence is presented that many-body interactions in fluids have important consequences at the liquid-vapor critical point. In particular, three-body interactions in lattice-gas models are shown to lead to revised scaling variables and to a singularity in the coexistence-curve diameter with an amplitude proportional to the molecular polarizability. This is confirmed in experiments reported here. A companion van der Waals theory explains several other observed correlations between nonuniversal critical amplitudes.

Original languageEnglish (US)
Pages (from-to)41-44
Number of pages4
JournalPhysical Review Letters
Volume58
Issue number1
DOIs
StatePublished - Jan 1 1987

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Goldstein, R. E., Parola, A., Ashcroft, N. W., Pestak, M. W., Chan, M. H. W., De Bruyn, J. R., & Balzarini, D. A. (1987). Beyond the pair-potential model of fluids at the liquid-vapor critical point. Physical Review Letters, 58(1), 41-44. https://doi.org/10.1103/PhysRevLett.58.41