Creation of ray modes by strong random scattering
Abstract
In the presence of strong random scattering the behavior of particles with degenerate spectra is quite different from Anderson localization of particles in a single band: it creates geometric states rather than confining the particles to an area of the size of the localization length. These states are subject to a Fokker-Planck dynamics with universal drift velocity and disorder dependent diffusion coefficient. This behavior has some similarity with the unidirectionally propagating edge states in quantum Hall systems.
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