Quantum Channels in Quantum Gravity

TL;DR

This paper explores how the black hole final state proposal can be integrated into quantum gravity using a path integral approach, linking geometry with information retrieval in black holes.

Contribution

It introduces a novel embedding of the black hole final state proposal into gauge/gravity duality via a path integral formalism inspired by thermo-field double techniques.

Findings

Realization of gravitational quantum channels for information retrieval.

Connections established between geometry and quantum information theory.

Framework for analyzing black hole information paradox in quantum gravity.

Abstract

The black hole final state proposal implements manifest unitarity in the process of black hole formation and evaporation in quantum gravity, by postulating a unique final state boundary condition at the singularity. We argue that this proposal can be embedded in the gauge/gravity context by invoking a path integral formalism inspired by the Schwinger-Keldysh like thermo-field double construction in the dual field theory. This allows us to realize the gravitational quantum channels for information retrieval to specific deformations of the field theory path integrals and opens up new connections between geometry and information theory.