Chronology protection in AdS/CFT and the stringy exclusion principle

by Joris Raeymaekers

Tuesday 2 Nov 2010, 14:00 → 15:00 Europe/Zurich

TH Theory Conference Room (CERN)

Hawking's chronology protection conjecture states that spacetimes which contain closed timelike curves are unphysical. We consider a simple toy model in AdS/CFT where the absence of closed timelike curves in the bulk is guaranteed by unitarity of the dual CFT. We also construct an embedding of this model in string theory and propose a dynamical mechanism for removing closed timelike curves. This mechanism naturally selects bulk geometries that obey the stringy exclusion principle.