SKM 2023 – wissenschaftliches Programm
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SYQC: Symposium Topology in Quantum and Classical Physics – From Topological Insulators to Active Matter
SYQC 1: Topology in Quantum and Classical Physics – From Topological Insulators to Active Matter
SYQC 1.2: Hauptvortrag
Mittwoch, 29. März 2023, 15:30–16:00, HSZ 01
Topological waves from solids to geo/astrophysical flows — •Pierre Delplace1, Antoine Venaille1, Nicolas Perez1,2, Guillaume Laibe2, Armand Leclerc2, Manolis Perrot1, and Brad Marston3 — 1CNRS, Laboratory of Physics, ENS de Lyon, France — 2CRAL, ENS de Lyon France — 3Brown University
Robust uni-directionnal edge modes are the hallmark of Chern insulators, a peculiar kind of topological insulators. Such topological states have been engineered in various platforms, from quantum solids to various classical analogs in photonics, acoustics and mechanics. Remarkably, such chiral modes also exist in continuous media encountered in nature. This is the case of oceanic and atmospheric equatorial waves that only propagate their energy eastward. This remarkable property, that triggers the El nino southern oscillations and impacts the climate over the globe, has a topological interpretation somehow similar to Chern insulators. Maybe more importantly, such topological tools actually also allow the prediction of previously unoticed waves in strongly stratified fluids that might be observable e.g. in stars.