Topological transition in stratified fluids

@article{Perrot2019TopologicalTI,
  title={Topological transition in stratified fluids},
  author={Manolis Perrot and Pierre Delplace and Antoine Venaille},
  journal={Nature Physics},
  year={2019},
  pages={1-4}
}
Lamb waves are trapped acoustic-gravity waves that propagate energy over great distances along a solid boundary in density-stratified, compressible fluids1,2. They constitute useful indicators of explosions in planetary atmospheres3,4. When the density stratification exceeds a threshold, or when the impermeability condition at the boundary is relaxed, atmospheric Lamb waves suddenly disappear5. Here, we use topological arguments to predict the possible existence of new trapped Lamb-like waves… 
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