RT Journal Article T1 The dynamical structure factor in topologically disordered systems A1 Martín Mayor, Víctor A1 Mézard, Marc A1 Parisi, Giorgio A1 Verrocchio, Paolo AB A computation of the dynamical structure factor of topologically disordered systems, where the disorder can be described in terms of Euclidean random matrices, is presented. Among others, structural glasses and supercooled liquids belong to that class of systems. The computation describes their relevant spectral features in the region of the high frequency sound. The analytical results are tested with numerical simulations and are found to be in very good agreement with them. Our results may explain the findings of inelastic x-ray scattering experiments in various glassy systems. PB American Institute of Physics SN 0021-9606 YR 2001 FD 2001-05-08 LK https://hdl.handle.net/20.500.14352/60325 UL https://hdl.handle.net/20.500.14352/60325 LA eng NO © 2001 American Institute of Physics. We would like to thank G. Biroli, W. Kob, R. Monasson, G. Ruocco, and G. Viliani for valuable discussions and crucial suggestions. This work has been performed in part during the stay of two of us ~M.M. and P.V.! at the Institute for Theoretical Physics of the University of California, Santa Barbara. We thank the Institute for its hospitality and acknowledge the partial support by National Science Foundation under Grant No. PHY94-07194. V.M.-M. is a M.E.C. fellow. P.V. would also like to thank the SPHYNX program, which has supported his stay at the Ecole Normale Superieure in Paris. NO National Science Foundation NO M.E.C. (Spain) (V. M. M) NO Ecole Normale Superieure in Paris (France) DS Docta Complutense RD 27 abr 2025