How Does the Relaxation of a Supercooled Liquid Depend on Its Microscopic Dynamics?

Using molecular dynamics computer simulations we investigate how the relaxation dynamics of a simple supercooled liquid with Newtonian dynamics differs from the one with a stochastic dynamics. We find that, apart from the early -relaxation regime, the two dynamics give rise to the same relaxation behavior. The increase of the relaxation times of the system upon cooling, the details of the relaxation, as well as the wave-vector dependence of the Edwards-Anderson parameters, are independent of the microscopic dynamics.