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Jonathan Luk (Stanford University)
Tuesday 11 January 2022, 10:00-11:00
The Vlasov-Poisson-Landau system in the weakly collisional regime
- đ¤ Speaker: Jonathan Luk (Stanford University)
- đ Date & Time: Tuesday 11 January 2022, 10:00 - 11:00
- đ Venue: Seminar Room 1, Newton Institute
Abstract
Consider the Vlasov-Poisson-Landau system in the weakly collisional regime. We show that solutions near global Maxwellians exhibit enhanced dissipation and Landau damping, resulting in a stronger stability threshold than previously known results. Our result is analogous to an earlier result of Bedrossian for the Vlasov-Poisson-Fokker-Planck system with the same threshold. However, unlike in the Fokker-Planck case, the linear operator cannot be inverted explicitly in the Landau case. For this reason, we develop a strategy based purely on energy methods, which combines Guo’s energy method with the hypocoercive energy and the commuting vector field method.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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