Low-frequency vibrations of jammed packings in large spatial dimensions Auteur(s): Shimada Masanari, Mizuno Hideyuki, Berthier L., Ikeda A. (Article) Publié: Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. p.052906 (2020) Texte intégral en Openaccess : Ref HAL: hal-02880594_v1 Ref Arxiv: 1910.07238 DOI: 10.1103/PhysRevE.101.052906 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote Résumé: Amorphous packings prepared in the vicinity of the jamming transition play a central role in theoretical studies of the vibrational spectrum of glasses. Two mean-field theories predict that the vibrational density of states $g(\omega)$ obeys a characteristic power law, $g(\omega)\sim\omega^2$, called the non-Debye scaling in the low-frequency region. Numerical studies have however reported that this scaling breaks down at low frequencies, due to finite dimensional effects. In this study, we prepare amorphous packings of up to $128000$ particles in spatial dimensions from $d=3$ to $d=9$ to characterise the range of validity of the non-Debye scaling. Our numerical results suggest that the non-Debye scaling is obeyed down to a frequency that gradually decreases as $d$ increases, and possibly vanishes for large $d$, in agreement with mean-field predictions. We also show that the prestress is an efficient control parameter to quantitatively compare packings across different spatial dimensions.