Photons in Flag Manifolds

par Olivier Guichard (Université de Strasbourg)

lundi 17 mars 2025, 14:00 → 15:15 Europe/Paris

Centre de conférences Marilyn et James Simons (IHES)

In our study of positive representations with Jonas Beyrer, Beatrice Pozzetti, François Labourie, and Anna Wienhard, we introduced and investigated families of circles in flag manifolds that we called "photons". This talk will present the basic properties of photons, as well as their relations with cross-ratios, and, if time permits, with collar lemmas for positive representations.