• Corpus ID: 243755183

Bragg scattering from a random potential

  title={Bragg scattering from a random potential},
  author={Donghwan Kim and Eric J Heller},
A potential for propagation of a wave in two-dimension 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 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. 


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