Abstract
Molecular dynamics simulations are used to generate an ensemble of saddles of the potential energy of a Lennard-Jones liquid. Classifying all extrema by their potential energy and number of unstable directions , a well-defined relation is revealed. The degree of instability of typical stationary points vanishes at a threshold potential energy , which lies above the energy of the lowest glassy minima of the system. The energies of the inherent states, as obtained by the Stillinger-Weber method, approach at a temperature close to the mode-coupling transition temperature .
- Received 17 July 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.5360
©2000 American Physical Society