Density scaling of generalized Lennard-Jones fluids in different dimensions

Thibaud Maimbourg*, Jeppe Dyre, Lorenzo Costigliola

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Liquids displaying strong virial-potential energy correlations conform to an approximate density scaling of their structural and dynamical observables. These scaling properties do not extend to the entire phase diagram, in general. The validity of the scaling can be quantified by a correlation coefficient. In this work a simple scheme to predict the correlation coefficient and the density-scaling exponent is presented. Although this scheme is exact only in the dilute gas regime or in high dimension d, the comparison with results from molecular dynamics simulations in d = 1 to 4 shows that it reproduces well the behavior of generalized Lennard-Jones systems in a large portion of the fluid phase.
Original languageEnglish
Article number090
JournalSciPost Physics
Volume9
Issue number6
Number of pages25
ISSN2542-4653
DOIs
Publication statusPublished - 22 Dec 2020

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