2026 - T2 - WS3 - Idealised mathematical models for geophysical flows

Collection 2026 - T2 - WS3 - Idealised mathematical models for geophysical flows

Organizer(s) Dormy, Emmanuel ; Lacave, Christophe ; Oruba, Ludivine ; Vasseur, Alexis
Date(s) 29/06/2026 - 03/07/2026
linked URL https://indico.math.cnrs.fr/event/13870/
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We consider the Vlasov-Poisson system in a 1d periodic setting, and consider the stability of steady states. The simplest family corresponds to homogeneous steady states, and a lot of literature has been devoted to their study. When a Penrose-type criterion is satisfied, following works of Mouhot-Villani and later works, perturbations are damped, when the Penrose criterion is violated, the situation is more complicated and related to another class of steady states: the (inhomogeneous) BGK waves.

Co-authors: Dongfen Bian, Emmanuel Grenier, Wenrui Huang

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  • This is based on the paper Stability and instability of Small BGK waves by D. Bian, E. Grenier, W. Huang and B. Pausader, arXiv:2601.10030.

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