We will argue that even with semiclassical gravity, it can be shown that a copy of  all the information on a Cauchy slice resides near the boundary of the slice. We will first demonstrate this in asymptotically global AdS, and then in four-dimensional asymptotically flat space. We will then describe a physical protocol that can be used to verify this property at low-energies and within perturbation theory. This property of gravity implies that information about the black-hole interior is always present "outside" the black hole, which leads to a fresh perspective on the information paradox.

1) https://arxiv.org/abs/2002.02448
2) https://arxiv.org/abs/2008.01740



Talk Number PIRSA:20090001
Speaker Profile Suvrat Raju
Collection Quantum Gravity