Speaker
Description
We show that the Ising model CFT can be used to obtain some clear insights into 3D (quantum) gravity with matter. We review arguments for the existence of its holographic description, and analyze the time dependence of perturbations of the theory at high temperature, which would correspond to throwing matter into a black hole in the dual gravitational picture. After an initial exponential damping - consistent with absorption by the black hole - the signal remarkably re-emerges again, apparently at odds with the expected black hole behaviour. We use the exact solvability of the Ising model CFT to deduce the behaviour of the bulk matter fields which is responsible for this remergence and thus allows for evading the black hole information paradox.
