dorsal/arxiv
View SchemaQuantum geometry of the rotating shallow water model
| Authors | Sriram Ganeshan, Alan T. Dorsey |
|---|---|
| Categories | |
| ArXiv ID | 2601.10695vv1 |
| URL | https://arxiv.org/abs/2601.10695 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
The rotating shallow water equations (RSWE) are a mainstay of atmospheric and oceanic modeling, and their wave dynamics has close analogues in settings ranging from two-dimensional electron gases to active-matter fluids. While recent work has emphasized the topological character of RSWE wave bands, here we develop a complementary quantum-geometric description by computing the full quantum geometric tensor (QGT) for the linearized RSWE on an $f$-plane. The QGT unifies two pieces of band geometry: its real part defines a metric that quantifies how rapidly wave polarization changes with parameters, while its imaginary part is the Berry curvature that controls geometric phases and topological invariants. We obtain compact, symmetry-guided expressions for all three bands, highlighting the transverse structure of the metric and the monopole-like Berry curvature that yields Chern numbers for the Poincar\'e bands. Finally, we describe a feasible route to probing this geometry in rotating-tank experiments via weak, time-periodic parametric driving.
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"abstract": "The rotating shallow water equations (RSWE) are a mainstay of atmospheric and oceanic modeling, and their wave dynamics has close analogues in settings ranging from two-dimensional electron gases to active-matter fluids. While recent work has emphasized the topological character of RSWE wave bands, here we develop a complementary quantum-geometric description by computing the full quantum geometric tensor (QGT) for the linearized RSWE on an $f$-plane. The QGT unifies two pieces of band geometry: its real part defines a metric that quantifies how rapidly wave polarization changes with parameters, while its imaginary part is the Berry curvature that controls geometric phases and topological invariants. We obtain compact, symmetry-guided expressions for all three bands, highlighting the transverse structure of the metric and the monopole-like Berry curvature that yields Chern numbers for the Poincar\\\u0027e bands. Finally, we describe a feasible route to probing this geometry in rotating-tank experiments via weak, time-periodic parametric driving.",
"arxiv_id": "2601.10695",
"authors": [
"Sriram Ganeshan",
"Alan T. Dorsey"
],
"categories": [
"physics.flu-dyn",
"cond-mat.mes-hall",
"physics.ao-ph"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Quantum geometry of the rotating shallow water model",
"url": "https://arxiv.org/abs/2601.10695",
"version": "v1"
},
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