Zobrazeno 1 - 10
of 426
pro vyhledávání: '"A, Venaille"'
This study examines the role of stratification in the formation and persistence of eastward jets (like the Gulf Stream and Kuroshio currents). Using a wind-driven, two-layer quasi-geostrophic model in a double-gyre configuration, we construct a phase
Externí odkaz:
http://arxiv.org/abs/2411.05660
Bulk-edge correspondence is a cornerstone in topological physics, establishing a connection between the number of unidirectional edge modes in physical space and a Chern number, an integer that counts phase singularities of the eigenmodes in paramete
Externí odkaz:
http://arxiv.org/abs/2311.18249
The Quasi-Biennial Oscillation (QBO) is understood to result from wave-mean-flow interactions, but the reasons for its relative stability remain a subject of ongoing debate. In addition, consensus has yet to be reached regarding the respective roles
Externí odkaz:
http://arxiv.org/abs/2311.10907
The exploration of a two-dimensional wind-driven ocean model with no-slip boundaries reveals the existence of a turbulent asymptotic regime where energy dissipation becomes independent of fluid viscosity. This asymptotic flow represents an out-of-equ
Externí odkaz:
http://arxiv.org/abs/2310.02187
Stellar oscillations can be of topological origin. We reveal this deep and so-far hidden property of stars by establishing a novel parallel between stars and topological insulators. We construct an hermitian problem to derive the expression of the st
Externí odkaz:
http://arxiv.org/abs/2210.02783
Publikováno v:
SciPost Phys. 14, 062 (2023)
Inhomogeneous media commonly support a discrete number of wave modes that are trapped along interfaces defined by spatially varying parameters. When they are robust against continuous deformations of parameters, such waves are said to be of topologic
Externí odkaz:
http://arxiv.org/abs/2207.01479
We examine the role discrete symmetries, time-reversal and mirror symmetries, play in the context of geophysical waves and instabilities. By looking at three special cases from the two-layer quasi-geostrophic model as well as developing a general fra
Externí odkaz:
http://arxiv.org/abs/2112.09511
Using topology, we unveil the existence of new unidirectional modes in compressible rotating stratified fluids. We relate their emergence to the breaking of time-reversal symmetry by rotation and vertical mirror symmetry by stratification and gravity
Externí odkaz:
http://arxiv.org/abs/2110.02002
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033161 (2024)
Bulk-edge correspondence is a cornerstone in topological physics, establishing a connection between the number of unidirectional edge modes in physical space and a Chern number, an integer that counts phase singularities of the eigenmodes in paramete
Externí odkaz:
https://doaj.org/article/721bab1919814620a7a1cc1823a2954c
Autor:
Venaille, Antoine, Delplace, Pierre
Publikováno v:
Phys. Rev. Research 3, 043002 (2021)
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 a particular role, as it is an unidirectional mode
Externí odkaz:
http://arxiv.org/abs/2011.03440