4.8 Review

The entropy of Hawking radiation

Journal

REVIEWS OF MODERN PHYSICS
Volume 93, Issue 3, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/RevModPhys.93.035002

Keywords

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Funding

  1. Ministry of Presidential Affairs, United Arab Emirates
  2. Simons Foundation, Simons Collaboration on the Nonperturbative Bootstrap
  3. U.S. Department of Energy (DOE) Grant [DE-SC0020397]
  4. U.S. DOE Grant [DE-SC0009988]
  5. Simons Foundation Grant [385600]
  6. U.S. Department of Energy (DOE) [DE-SC0020397] Funding Source: U.S. Department of Energy (DOE)

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This review discusses recent progress on the black hole information problem, focusing on a new understanding of calculating the entropy of Hawking radiation. It shows how the method for computing gravitational fine-grained entropy can be extended to account for the entropy of Hawking radiation, revealing significant corrections needed for consistency with unitary black hole evaporation.
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.

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