Single-parameter aging in a binary Lennard-Jones system

This paper studies physical aging by computer simulations of a 2:1 Kob-Andersen binary Lennard-Jones mixture, system that is less prone to crystallization than the standard 4:1 composition. Starting from thermal-equilibrium states, time evolution following four quantities monitored up and down jumps in temperature: potential energy, virial, average squared force, Laplacian energy. Despite fact significantly larger temperature are studied here previous experiments, good approximation all conform single-parameter-aging scenario derived validated for small experiments [Hecksher et al., J. Chem. Phys. 142, 241103 (2015)]. As further confirmation single-parameter with common material different monitored, their relaxing parts found be almost identical jumps.