School of Mathematical Sciences

The nonlinear stability of Minkowski spacetime for self-gravitating massive fields menu

The nonlinear stability of Minkowski spacetime for self-gravitating massive fields

Speaker: 
Philippe G. LeFloch (Paris)
Date/Time: 
Tue, 07/03/2017 - 15:00
Room: 
Queens Building W316
Seminar series: 

I will discuss the global evolution problem for self-gravitating massive matter in the context of Einstein's theory and, more generally, of the f(R)-theory of gravity. In collaboration with Yue Ma (Xian), I have investigated the global existence problem for the Einstein-Klein-Gordon system and established that Minkowski spacetime is globally nonlinearly stable in presence of massive fields. The original method proposed by Christodoulou and Klainerman as well as the proof in wave gauge by Lindblad and Rodnianski cover vacuum spacetimes or massless fields only. Analyzing the time decay of massive waves requires a completely new approach, the Hyperboloidal Foliation Method, which is based on a foliation by asymptotically hyperboloidal hypersurfaces and on investigating the algebraic structure of the Einstein-Klein-Gordon system.