Observations on sound propagation in rapidly rotating Bose-Einstein condensates.

@article{Simula2005ObservationsOS,
  title={Observations on sound propagation in rapidly rotating Bose-Einstein condensates.},
  author={T. Simula and P. Engels and I. Coddington and V. Schweikhard and E. Cornell and R. Ballagh},
  journal={Physical review letters},
  year={2005},
  volume={94 8},
  pages={
          080404
        }
}
Repulsive laser potential pulses applied to vortex lattices of rapidly rotating Bose-Einstein condensates create propagating density waves which we have observed experimentally and modeled computationally to high accuracy. We have observed a rich variety of dynamical phenomena ranging from interference effects and shock-wave formation to anisotropic sound propagation. 

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