| Literature DB >> 12188692 |
A M Berezhkovskii1, G Sutmann.
Abstract
The first six even moments of the displacement of a molecule in water and an atom in liquid argon are found by molecular dynamics simulations and compared with the moments predicted by diffusion theory. We find a noticeable difference between the moments higher than the second. The ratio between predicted and calculated moments approaches unity as 1/t for times larger than 10 ps. Continuous time random walk is used to explain this slow approach of the moments to their diffusion limit.Entities:
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Year: 2002 PMID： 12188692 DOI： 10.1103/PhysRevE.65.060201
Source DB: PubMed Journal: Phys Rev E Stat Nonlin Soft Matter Phys ISSN： 1539-3755