Gauge/Gravity Duality and the Black Hole Interior

TL;DR

The paper argues that typical black holes with gauge/gravity duals generically have firewalls at the horizon, even without invoking entanglement with external systems, and sharpens firewall reasoning beyond standard EFT assumptions. It analyzes the interior-observation problem, outlining several possibilities for interior reconstruction in the dual description, and challenges the ER=EPR idea by showing that generic entanglement does not geometrize into a wormhole based on ETH and random-phase correlators. It further maintains that Hawking radiation calculations remain valid in the presence of firewalls due to thermal behavior implied by ETH. Overall, the work emphasizes that current insights derive from general principles and highlights gaps requiring deeper understanding of quantum gravity.

Abstract

We present a further argument that typical black holes with field theory duals have firewalls at the horizon. This argument makes no reference to entanglement between the black hole and any distant system, and so is not evaded by identifying degrees of freedom inside the black hole with those outside. We also address the ER=EPR conjecture of Maldacena and Susskind, arguing that the correlations in generic highly entangled states cannot be geometrized as a smooth wormhole.