Title

Sound-Propagation Gap in Fluid Mixtures

Author(s)/Creator(s)

Supurna Sinha, Syracuse University
M. Cristina Marchetti, Syracuse UniversityFollow

Document Type

Article

Date

5-3-2006

Keywords

condensed matter, soft condensed matter

Language

English

Disciplines

Physics

Description/Abstract

We discuss the behavior of the extended sound modes of a dense binary hard-sphere mixture. In a dense simple hard-sphere fluid the Enskog theory predicts a gap in the sound propagation at large wave vectors. In a binary mixture the gap is only present for low concentrations of one of the two species. At intermediate concentrations sound modes are always propagating. This behavior is not affected by the mass difference of the two species, but it only depends on the packing fractions. The gap is absent when the packing fractions are comparable and the mixture structurally resembles a metallic glass.

Additional Information

This manuscript is from arXiv.org, for more information see http://arxiv.org/abs/cond-mat/0506350

Recommended Citation

arXiv:cond-mat/0506350v2

Source

harvested from arXiv.org

Creative Commons License

This work is licensed under a Creative Commons Attribution 3.0 License.