Vibrations in glasses and Euclidean random matrix theory



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Grigera, T.S. and Martín Mayor, Víctor and Parisi, G. and Verrocchio, P. (2002) Vibrations in glasses and Euclidean random matrix theory. Journal of physics-condensed matter, 14 (9). pp. 2167-2179. ISSN 0953-8984

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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.

Item Type:Article
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© 2002 IOP Publishing Ltd. International Conference on Scaling Concepts and Complex Systems (2001. Mérida, México)

Uncontrolled Keywords:Frequency propagationg modes; Vitreous silica; Boson peak; Relaxation processes; Forming liquids; Densified SiO(2); Scattering; Dynamics; Excitations; Localization.
Subjects:Sciences > Physics > Physics-Mathematical models
ID Code:46778
Deposited On:22 Mar 2018 09:28
Last Modified:22 Mar 2018 09:28

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