A quantum statistical theory of phonon-mediated physisorption has been developed by setting up the initial value problem within nonequilibrium statistical mechanics and calculating the desorption times appropriate for the various experimental procedures, i.e. virgin adsorption, isothermal...

We study the time evolution of a large system consisting of two kinds of particles that can be transformed into each other by (a) an external potential with momentum mixing and (b) a uniform and random distribution of static, short-ranged scattering centers. Integral eqautions are solved exactly...

We construct the exact solution for the time evolution of the local mass density in an ideal gas in which an external short-ranged separable potential is switched on at time t = 0. The redistribution of matter in strong potentials causing bound states or resonances is studied in great numerical...

We study the time evolution of a large system consisting of two kinds of particles that can be transformed into each other by an external field. The introduction of strong enough two-body interactions leads to the emergence of two time scales. The first one is connected with (small) asymptotic...