Bragg scattering from a random potential
Disordered Systems and Neural Networks
2022-05-26 v3
Abstract
A potential for propagation of a wave in two dimensions is constructed from a random superposition of plane waves around all propagation angles. Surprisingly, despite the lack of periodic structure, sharp Bragg diffraction of the wave is observed, analogous to a powder diffraction pattern. The scattering is partially resonant, so Fermi's golden rule does not apply. This phenomenon would be experimentally observable by sending an atomic beam into a chaotic cavity populated by a single mode laser.
Keywords
Cite
@article{arxiv.2109.08269,
title = {Bragg scattering from a random potential},
author = {Donghwan Kim and Eric J. Heller},
journal= {arXiv preprint arXiv:2109.08269},
year = {2022}
}