Speaker
Tadashi Takayanagi
Description
The holographic principle provides a powerful framework to study quantum gravity by establishing a connection between bulk geometry and boundary quantum information. While holographic entanglement entropy serves as a standard tool to map algebraic properties in quantum information to geometric properties in gravity, this only cares about the space-like correlations. To explore time-like correlations, we argue that we need to extend it, which is called time-like entanglement entropy. We will provide both field theoretic and holographic calculations of this quantity. We will also discuss our recent application of this idea to traversable AdS wormholes and dS/CFT Correspondence.