Strong cosmic censorship in two dimensions

We study the behavior of a free massive scalar wave-packet near the Cauchy horizon of an AdS₂ black hole and find that it becomes infinitely differentiable for smooth initial data, independently of the parameters describing the spacetime or the scalar. This indicates a violation of the strong cosmic censorship conjecture at the classical level. We discuss our result in connection with some recent observations of violation of the conjecture for certain nearly extremal black holes.