Vibrations in glasses and Euclidean random matrix theory
We study numerically and analytically a simple off-lattice model of scalar harmonic vibrations by means of Euclidean random matrix theory. Since the spectrum of this model shares the most puzzling spectral features with the high-frequency domain of glasses (non-Rayleigh broadening of the Brillouin p...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2002 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/60322 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/60322 |
| Access Level: | acceso abierto |
| Palabra clave: | 53 Frequency propagationg modes Vitreous silica Boson peak Relaxation processes Forming liquids Densified SiO(2) Scattering Dynamics Excitations Localization. Física-Modelos matemáticos |
| Sumario: | We study numerically and analytically a simple off-lattice model of scalar harmonic vibrations by means of Euclidean random matrix theory. Since the spectrum of this model shares the most puzzling spectral features with the high-frequency domain of glasses (non-Rayleigh broadening of the Brillouin peak, boson peak and secondary peak), the Euclidean random matrix theory provide a single and fairly simple theoretical framework to their explanation. |
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