TiTle: Strong cosmic censorship in T^3-Gowdy spacetimes

Author: Hans Ringström

Abstract: We will talk about the above paper by Hans Ringström, published in Ann. Math. Einstein’s vacuum equations can be viewed as an initial value problem, and given initial data there is one part of spacetime, the so-called maximal globally hyperbolic development (MGHD), which is uniquely determined up to isometry. Unfortunately, it is sometimes possible to extend the spacetime beyond the MGHD in inequivalent ways. Consequently, the initial data do not uniquely determine the spacetime, and in this sense the theory is not deterministic. It is then natural to make the strong cosmic censorship conjecture, which states that for generic initial data, the MGHD is inextendible. Since it is unrealistic to hope to prove this conjecture in all generality, it is natural to make the same conjecture within a class of spacetimes satisfying some symmery condition. Here, they prove strong cosmic censorship in the class of T^3 -Gowdy spacetimes.

Date &Time: May 27, 2:30pm-4:30pm

Speaker: Weiping Yan（BICMR, PKU）

Venue: Room 9 at Quan Zhai(BICMR)