Speaker
Alexandre Belin
(Universita & INFN, Milano-Bicocca (IT))
Description
Euclidean wormholes are understood to encode important non-perturbative information of gravitational physics, coming from the chaotic nature of the dual CFT. In this talk, I will discuss the Lorentzian slicings of such geometries. Slicing a Euclidean geometry, in terms of the path integral, is a method often used to prepare states. In this case, the nature of the state is radically different depending on whether the cut intersects the AdS boundary or not. If it does, the bulk geometry should have an interpretation as a state in the CFT. If it does not, the geometry prepares a state in a closed universe. We discuss both cases and discuss the interpretation from the point of view of the dual CFT.