AGING EFFECTS IN A LENNARD-JONES GLASS

Using molecular dynamics simulations we study the out of equilibrium d ynamic correlations in a model glass-forming liquid. The system is que nched from a high temperature to a temperature below its glass transit ion temperature and the decay of the two-time intermediate scattering function C(t(w), t + t(w)) is monitored for several values of the wait ing time t(w) after the quench. We find that C(t(w), t + t(w)) shows a strong dependence on the waiting time, i.e., aging, depends on the te mperature before the quench, and, similar to the case of spin glasses, can be scaled onto a master curve.