Palestrante: Thierry Barbot (Université d'Avignon)

Título: Flat singular spacetimes, decorated Teichmüller space and singular euclidean surfaces

Resumo: I will present the PhD Thesis work of my student Léo Brunswic, dedicated to flat singular spacetimes. One motivation is to provide a parametrization of singular flat spacetimes of dimension 3, admitting massive particles or even a new type of singularities called extreme BTZ black holes. The parametrization is made through singular euclidean surfaces, that we try to realize as polyhedral surfaces in the spacetime. This approach is connected to the notion of decorated Teichmüller space introduced by R. Penner.

Data: 26/10/2016

Hora: 15:30h
Local: C116