Intensity of waves inside a strongly disordered medium
arXiv:1907.05299 · doi:10.1103/PhysRevLett.123.233903
Abstract
Anderson localization does not lead to an exponential decay of intensity of an incident wave with the depth inside a strongly disordered three-dimensional medium. Instead, the average intensity is roughly constant in the first half of a disordered slab, sharply drops in a narrow region in the middle of the sample, and then remains low in the second half of the sample. A universal, scale-free spatial distribution of average intensity is found at mobility edges where the intensity exhibits strong sample-to-sample fluctuations. Our numerical simulations allow us to discriminate between two competing local diffusion theories of Anderson localization and to pinpoint a deficiency of the self-consistent theory.
Main text 6 pages, 3 figures + Supplemental material 6 pages, 6 figures
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- Influence of atomic motion on the collective effects in dense and cold atomic ensembles
- Anisotropy of localized states in an anisotropic disordered medium
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