Grigera, T.S.Martín Mayor, VíctorParisi, G.Verrocchio, P.2023-06-202023-06-202002-03-110953-898410.1088/0953-8984/14/9/306https://hdl.handle.net/20.500.14352/60322© 2002 IOP Publishing Ltd. International Conference on Scaling Concepts and Complex Systems (2001. Mérida, México)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.engjournal articlehttp://dx.doi.org/10.1088/0953-8984/14/9/306http://iopscience.iop.orghttps://arxiv.org/abs/cond-mat/0110441v1open access53Frequency propagationg modesVitreous silicaBoson peakRelaxation processesForming liquidsDensified SiO(2)ScatteringDynamicsExcitationsLocalization.Física-Modelos matemáticos