Comments on Euclidean wormholes and holography

Euclidean wormholes are exotic types of gravitational solutions, that we still don't understand completely. In the first part of the talk, I will analyze asymptotically AdS wormhole solutions, from a bottom-up holographic point of view. By studying correlation functions of local and non-local operators the universal properties that any putative holographic dual should exhibit, become manifest. The system is very weakly cross-coupled in the UV, and becomes strongly cross-coupled in the IR. In the second part, I will describe some concrete field theoretic setups which could give rise to such geometries. Finally, I will comment on various issues arising in the alpha-parameter interpretation of the wormhole gas.