In the last decades, a wide collection of experimental evidence has been found in the study of supercooled glassformers on the existence of a crossover between two dynamical regimes at a temperature Tc. We discuss the validity of the Vogel–Fulcher–Tammann in both regions. The breakdown of...

The generalized Langevin equation formalism proposed by Medina-Noyola is used to calculate the long-time self-diffusion coefficient Dsl of charged spherical Brownian particles as function of their charge Q0 and volume fraction ϕ, and of the salt concentration ns. The effects of self-friction...

We study the dynamics of a tracer particle, which performs a totally directed random walk in an adsorbed monolayer composed of mobile hard-core particles undergoing continuous exchanges with a vapour phase. In terms of a mean-field-type approach, based on the decoupling of the...

In this work we derive a generalized Langevin equation that describes the translational Brownian motion of a tracer particle which interacts with other diffusing particles in the system. The direct interactions of the tracer with these other diffusing particles give rise to memory effects...