Vibrational spectra in glasses

Details Vibrational spectra in glasses Vibrational spectra in glasses

2001-04-23

arxiv.org/abs/cond-mat/0104433v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

Talk given at the '8th International Workshop on Disordered Systems' Andalo, Trento, 12-15 March 2001

Scientific paper

10.1080/13642810110084588

The findings of X-ray and neutron scattering experiments on amorphous systems are interpreted within the framework of the theory of Euclidean random matrices. This allows to take into account the topological nature of the disorder, a key ingredient which strongly affects the vibrational spectra of those systems. We present a resummation scheme for a perturbative expansion in the inverse particle density, allowing an accurate analytical computation of the dynamical structure factor within the range of densities encountered in real systems.

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