Speaker: Dr. Xingyu Li (University of Trieste)

Title: Global stability of vacuum for the relativistic Vlasov-Maxwell-Boltzmann system

Time: 10:00-11:00  February 2nd, 2026 (Monday)

Place: MCM110

Abstract: We consider the three-dimensional relativistic Vlasov–Maxwell–Boltzmann system, where the speed of light $c$ is an arbitrary constant no less than 1, and we establish global existence and nonlinear stability of the vacuum for small initial data, with bounds that are uniform in $c$. The analysis is based on the vector field method combined with the Glassey–Strauss decomposition of the electromagnetic field, and does not require any compact support assumption on the initial data. A key ingredient of the proof is the derivation of a chain rule for the relativistic Boltzmann collision operator that is compatible with the commutation properties of the vector fields. These tools allow us to control the coupled kinetic and electromagnetic equations and to obtain global stability near vacuum. This is a joint work with Chuqi Cao.