By considering an ensemble of Brownian particles suspended in a heat bath as a thermodynamic system with an internal degree of freedom it is possible to obtain the Fokker-Planck equation for Brownian motion in a temperature gradient, by applying the scheme of non-equilibrium thermodynamics. We...

Our previous work in which we have computed the stationary correlation functions of positions and momenta in the “harmonic liquid” is now extended to get the expressions of the time-dependent correlation functions of such quantities. The static and dynamic structure factors are computed. The...

The methods of non-equilibrium thermodynamics of systems with an interface have been applied to the study of thermionic emission processes in abrupt semiconductor junctions, including the effects of surface states. Our analysis covers different situations of interest, concerning unipolar and...

The dynamic structure factor of a suspension moving through a fluid with spin (suspension of dipolar particles in the continuum limit) is computed. Two situations are treated, namely when the system is in equilibrium and when a velocity gradient is present. In the first case we get a correction...

A scheme introduced recently for the description of non-linear hydrodynamic fluctuations of a one-component fluid is extended to the case of a two-component charged fluid. The random fluxes which are introduced are assumed to be Gaussian processes with white noise. It is found that the usual...

We show the existence of intermittent dynamics in one of the simplest model of a glassy system: the two-state model, which has been used [Physica A 329 (2003) 357] to explain the origin of the violation of the fluctuation–dissipation theorem. The dynamics is analyzed through a Langevin...