Longitudinal and Transverse Excitations in a Glass
- 25 October 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 49 (17), 1271-1274
- https://doi.org/10.1103/physrevlett.49.1271
Abstract
The dynamic structure factor and its generalization for transverse excitations for the normal modes of a Lennard-Jones glass are calculated. The results are compared with those for a polycrystal. The longitudinal dispersion curve shows a remarkably deep minimum at the wave vector where the structure factor has a peak.Keywords
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