SPACE-TIME ASPECTS OF QUASI-PARTICLE PROPAGATION

We discuss how spin-charge separation is realized in a simple double-l ayer geometry, how mass renormalization affects time-of-flight in comp ressible Hall states, and how quantum drifts can reveal the effective charge, mass and quantum statistics in incompressible Hall states. We also discuss the possibility of observing the effect of fractional sta tistics directly in scattering. Finally we propose that, as a result o f incompressibility and reflecting the fundamental charge-flux relatio n, charged probes induce macroscopic rotation of Hall fluids.