# 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…

## 32 Citations

Topological Waves in Astrophysical and Geophysical Flows

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Geophysical fluids such as the ocean and atmosphere can be stratified: their density depends on the depth. As a consequence, they can host internal gravity waves that propagate in the bulk of the…

A bulk-interface correspondence for equatorial waves

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A theoretical framework is developed to describe the Topological Langmuir-Cyclotron Wave (TLCW), a recently identiﬁed topological surface excitation in magnetized plasmas. As a topological wave, the…

Wave topology brought to the coast

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Since the pioneering work of Kelvin on Laplace tidal equations, a zoology of trapped waves have been found in the context of coastal dynamics. Among them, the one originally computed by Kelvin plays…

Manifestation of the Berry curvature in geophysical ray tracing

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Anomalous bulk-edge correspondence in continuous media

- Physics
- 2019

Topology plays an increasing role in physics beyond the realm of topological insulators in condensed mater. From geophysical fluids to active matter, acoustics or photonics, a growing family of…

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- Physics
- 2021

Plasmas have been recently studied as topological materials. We attempt at a comprehensive picture of the topological phases, topological phase transitions, and the bulk-edge correspondence of…

Topology of rotating stratified fluids with and without background shear flow

- Physics, Environmental Science
- 2021

Poincaré-gravity modes described by the shallow water equations in a rotating frame have nontrivial topology, providing a new perspective on the origin of equatorially trapped Kelvin and Yanai waves.…

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