Quantitative stability for the Brascamp-Lieb inequality and moment measures

Abstract

By employing the recently obtained sharp stability versions of the Pr\'ekopa--Leindler inequality, we are able to obtain a sharp quantitative stability version for the Brascamp--Lieb inequality, as well as several different results on the stability of moment measures. As main features of our results, we highlight the independence of the stability constant for the Brascamp--Lieb inequality on the convex function considered, a completely novel feature. In the realm of moment measures, we highlight in the same vein that the stability results obtained are uniform, which we expect to be particularly valuable not only from a purely mathematical point of view, but also for applications.