Issue |
EPL
Volume 96, Number 3, November 2011
|
|
---|---|---|
Article Number | 36010 | |
Number of page(s) | 5 | |
Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
DOI | https://doi.org/10.1209/0295-5075/96/36010 | |
Published online | 24 October 2011 |
Mapping the glassy dynamics of soft spheres onto hard-sphere behavior
1
Institut für Theoretische Physik 2: Weiche Materie, Heinrich-Heine-Universität Düsseldorf 40225 Düsseldorf, Germany, EU
2
Department of Physics and Astronomy, University of Pennsylvania - Philadelphia, PA 19104, USA
3
The Molecular Foundry, Lawrence Berkeley National Laboratory - Berkeley, CA 94720, USA
4
The James Franck Institute, The University of Chicago - Chicago, IL 60637, USA
a
schmiedeberg@thphy.uni-duesseldorf.de
Received:
1
July
2011
Accepted:
20
September
2011
We show that the dynamics of soft-sphere systems with purely repulsive interactions can be described by introducing an effective hard-sphere diameter determined using the Andersen-Weeks-Chandler approximation. We find that this approximation, known to describe static properties of liquids, also gives a good description of a dynamical quantity, the relaxation time, even in the vicinity of the glass transition.
PACS: 64.70.kj – Glasses / 64.70.pm – Liquids / 64.70.pv – Colloids
© EPLA, 2011
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