In a superlattice containing a finite number of periods, the allowed values of the Bloch wave number form a discrete set, and the dynamics of an electron through k-space under the influence of an external force is necessarily that of a superposition wave packet composed of multiple Bloch waves. The present paper investigates this dynamics for a particularly simple class of “kcompact” wave packe...

Evanescent wave dynamic light scattering and Stokesian dynamics simulations were employed to study the dynamics of hard-sphere colloidal particles near a hard wall in concentrated suspensions. The evanescent wave averaged short-time diffusion coefficients were determined from experimental correlation functions over a range of scattering wave vectors and penetration depths. Stokesian dynamics si...

The development of short, powerful laser pulses and of sophisticated trapping techniques within the last few years has stimulated numerous theoretical and experimental investigations on the dynamics of wave packets in elementary, material quantum systems. These wave packets are non stationary, spatially localized quantum states which are situated on the border between the microscopic and macros...