PDE Seminar Fall 2026
Fridays, 3:30 – 4:20pm. The talks will be either at the Sony Building or at the Stevenson Center 1 building. See below for the specific building and room of each talk. Occasionally, talks will be virtual via Zoom. When possible, in-person talks will be live streamed.
Date: Friday, Sept 11, 12:30 (note different time).
- Speaker: Gong Chen, Georgia Institute of Technology.
- Title: Global internal mode dynamics for the 1D quartic Klein-Gordon equation.
- Abstract: We study the quartic Klein–Gordon equations with a potential in one space dimension as model problems and establish a global description of internal mode dynamics and radiation damping. It is well-known that internal modes not only decay slowly, but their amplitudes can also lose smallness at large times; combined with the slow dispersive decay in 1 dimension, this makes the global analysis particularly delicate. Our approach is based on distorted Fourier transforms, normal form transformations, together with a collection of refined dispersive decay and smoothing estimates, which we exploit even at the level of the internal mode equation itself. This is a joint work with Gael Diebou, Adilbek Kairzhan and Fabio Pusateri.
- Location: Sony Building, A1009.
Date: Thursday, October 8 (note different day).
- Speaker: Gilbert Weinstein, Ariel University (Israel).
- Title: TBA.
- Abstract: TBA.
- Location: Sony Building, Chapel.
Date: Friday, November 13.
- Speaker: Ning Tang, University of California Berkeley.
- Title: TBA.
- Abstract: TBA.
- Location: Sony Building, A1013.