The holographic map of an evaporating black hole

Year: 2023

Authors: Gyongyosi Z., Hollowood TJ., Kumar SP., Legramandi A., Talwar N.

Autors Affiliation: Swansea Univ, Dept Phys, Swansea SA2 8PP, Wales; Univ Trento, Pitaevskii BEC Ctr, CNR INO, I-38123 Trento, Italy; Univ Trento, Dipartimento Fis, I-38123 Trento, Italy; Trento Inst Fundamental Phys & Applicat, INFN TIFPA, Trento, Italy.

Abstract: We construct a holographic map that takes the semi-classical state of an evaporating black hole and its Hawking radiation to a microscopic model that reflects the scrambling dynamics of the black hole. The microscopic model is given by a nested sequence of random unitaries, each one implementing a scrambling time step of the black hole evolution. Differently from other models, energy conservation and the thermal nature of the Hawking radiation are taken into account. We show that the QES formula follows for the entropy of multiple subsets of the radiation and black hole. We further show that a version of entanglement wedge reconstruction can be proved by computing suitable trace norms and quantum fidelities involving the action of a unitary on a subset of Hawking partners. If the Hawking partner is in an island, its unitary can be reconstructed by a unitary on the radiation. We also adopt a similar setup and analyse reconstruction of unitaries acting on an infalling system.

Journal/Review: JOURNAL OF HIGH ENERGY PHYSICS

Volume: (7)      Pages from: 43-1  to: 43-35

More Information: TJH, AL and SPK acknowledge support from STFC grant ST/T000813/1. NT and ZG acknowledge the support of an STFC Studentship. AL has also received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 804305).
KeyWords: AdS-CFT Correspondence; Black Holes; Models of Quantum Gravity; 2D Gravity
DOI: 10.1007/JHEP07(2023)043

Citations: 2
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