Strong Cosmic Censorship

by Dr Oscar Campos Dias (U Southampton)

Monday 13 Jan 2020, 15:15 → 16:45 Europe/Berlin

Room 114 (ITP Leipzig)

Abstract: Generically, strong cosmic censorship (SCC) is the statement that physics within general relativity should be predicted from initial data prescribed on a Cauchy hypersurface. In this talk I will review how fine-tuned versions of SCC have been formulated and evolved along the last decades up to the point where we believe that Christodoulou’s version is true in asymptotically flat spacetimes. However, I will also describe that in the last 2 years it was found that this is no longer necessarily true for some other backgrounds, namely in some de Sitter (with a positive cosmological) spacetimes or even in rotating BTZ black holes in 3-dimensional Anti-de Sitter spacetime. Finally I will discuss some possibilities (non-smooth initial data, quantum effects,...) that might restore SCC in those backgrounds where the standard formulation of the conjecture is violated.