Rev. Mod. Phys. 93, 035002 (2021) - The entropy of Hawking radiation

The entropy of Hawking radiation

Ahmed Almheiri, Thomas Hartman, Juan Maldacena, Edgar Shaghoulian, and Amirhossein Tajdini

Rev. Mod. Phys. 93, 035002 – Published 21 July 2021

Abstract

In this review, recent progress on the black hole information problem that involves a new understanding of how to calculate the entropy of Hawking radiation is described. The review shows how the method for computing gravitational fine-grained entropy, developed over the past 15 years, can be extended to capture the entropy of Hawking radiation. This technique reveals large corrections needed for the entropy to be consistent with unitary black hole evaporation.

Received 5 December 2020

DOI:https://doi.org/10.1103/RevModPhys.93.035002

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Quantum aspects of black holes Quantum fields in curved spacetime Quantum gravity

Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Institute for Advanced Study, Princeton, New Jersey 08540, USA

Department of Physics, Cornell University, Ithaca, New York 14850, USA

Institute for Advanced Study, Princeton, New Jersey 08540, USA

Edgar Shaghoulian and Amirhossein Tajdini

Department of Physics, Cornell University, Ithaca, New York 14850, USA

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Issue

Vol. 93, Iss. 3 — July - September 2021

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