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Character of Atomic Vibrations in a Lennard-Jones Glass
Philip B. Allen, W. Garber, L. Angelani
Lennard-Jones glasses (made on a computer by quenching from liquid state coordinates) are studied in harmonic approximation. Vibrational eigenfrequencies and eigenvectors are found…
Low-energy excess of vibrational states in v-SiO2: the role of transverse dynamics
O. Pilla, A. Fontana, J. R. Goncalves +2
The study of the effects of the density variations on the vibrational dynamics in vitreous silica is presented. A detailed analysis of the dynamical structure factor, as well as of…
General features of the energy landscape in Lennard-Jones like model liquids
L. Angelani, G. Ruocco, M. Sampoli +1
Features of the energy landscape sampled by supercooled liquids are numerically analyzed for several Lennard-Jones like model systems. The properties of quasisaddles (minima of the…
Dynamics and geometric properties of the k-Trigonometric model
F. Zamponi, L. Angelani, L. F. Cugliandolo +2
We analyze the dynamics and the geometric properties of the Potential Energy Surfaces (PES) of the k-Trigonometric Model (kTM), defined by a fully-connected k-body interaction. Thi…
Potential Energy Landscape in Lennard-Jones binary mixture model
M. Sampoli, P. Benassi, R. Eramo +2
The potential energy landscape in the Kob-Andersen Lennard-Jones binary mixture model has been studied carefully from liquid down to the supercooled regime, from T =2 down to T =0.…