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

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


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
Issue number1
StatePublished - 1987

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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