Velocity Autocorrelation and Harmonic Motion in Supercooled Nondiffusing Monatomic Liquids

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dc.creatorChisolm, Eric D.
dc.creatorClements, Brad E.
dc.creatorWallace, Duane C.
dc.date2000-02-03
dc.date.accessioned2026-07-07T02:36:41Z
dc.date.available2026-07-07T02:36:41Z
dc.descriptionStudies of the many-body potential surface of liquid sodium have shown that it consists of a great many intersecting nearly harmonic valleys, a large fraction of which have the same frequency spectra. This suggests that a sufficiently supercooled state of this system, remaining in a single valley, would execute nearly harmonic motion. To test this hypothesis, we have compared $\hat{Z}(t)$, the normalized velocity autocorrelation function, calculated from MD simulations to that predicted under the assumption of purely harmonic motion. We find nearly perfect agreement between the two, suggesting that the harmonic approximation captures all essential features of the motion.
dc.description12 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0002057
dc.identifierhttp://arxiv.org/abs/cond-mat/0002057
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16014
dc.subjectStatistical Mechanics
dc.titleVelocity Autocorrelation and Harmonic Motion in Supercooled Nondiffusing Monatomic Liquids
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