Potential Energy Landscape in Lennard-Jones binary mixture model

Abstract

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 =0.46. One thousand of independent configurations along the time evolution have been examined at each investigated temperature. From the starting configuration we searched the nearest saddle (or quasi-saddle) and minimum of the potential energy. The vibrational densities of states for the starting and the two derived configurations have been evaluated. Besides the number of negative eigenvalues of saddle, other quantities show some signature of the approaching of the dynamical arrest temperature.

15 pages, 8 figures, to be published on Journal of Physics: Cond. Matt

References in corpus (2)

• Saddle Points and Dynamics of Lennard-Jones Clusters, Solids and Supercooled Liquids
• Geometric approach to the dynamic glass transition

Cited by in corpus (10)

• Thermodynamic Scaling of the Viscosity of Van Der Waals, H-Bonded, and Ionic Liquids
• Some Further Results for the Stationary Points and Dynamics of Supercooled Liquids
• Dynamic heterogeneity and non-Gaussian behavior in a model supercooled liquid
• General features of the energy landscape in Lennard-Jones like model liquids
• A localization transition underlies the mode-coupling crossover of glasses
• Understanding fragility in supercooled Lennard-Jones mixtures. II. Potential energy surface
• Are there localized saddles behind the heterogeneous dynamics of supercooled liquids?
• Topological properties of the mean field phi^4 model
• Mean-field dynamic criticality and geometric transition in the Gaussian core model
• Dynamics and geometric properties of the k-Trigonometric model