Physics Group Meeting

Boundary state black holes are single sided pure black holeswith an End-of-the-World Brane cutting off the spacetime in the interior. I demonstrate that certain Hamiltonian deformations tuned to the black hole microstate inject negative energy causing the horizon to recede, allowing for signals to escape the interior. Also, previous ideas describe how these states may be prepared by considering the Thermofield Double state dual to the eternal black hole and performing a complete measurement on one of the boundaries. I describe a naive tension between this and theidea that entanglement between the two boundaries is necessary for the existence of the interior. I show how positing that AdS/CFT implements a quantum error correcting code resolves this tension and maintains the existence of the interior geometry. Moreover, I describe how to prepare an (almost) entire basis of black hole microstates all of which have smooth interiors, and whose modes are mapped into the remaining boundary in a state dependent way.