Entropy Evaporated by a Black Hole

W. H. Zurek
Phys. Rev. Lett. 49, 1683 – Published 6 December 1982
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Abstract

It is shown that the entropy of the radiation evaporated by an uncharged, nonrotating black hole into vacuum in the course of its lifetime is approximately 43 times the initial entropy of this black hole. Also considered is a thermodynamically reversible process in which an increase of black-hole entropy is equal to the decrease of the entropy of its surroundings. Implications of these results for the generalized second law of thermodynamics and for the interpretation of black-hole entropy are pointed out.

  • Received 30 August 1982

DOI:https://doi.org/10.1103/PhysRevLett.49.1683

©1982 American Physical Society

Authors & Affiliations

W. H. Zurek

  • Theoretical Astrophysics, California Institute of Technology, Pasadena, California 91125

Comments & Replies

Comment on "Entropy Evaporated by a Black Hole"

Don N. Page
Phys. Rev. Lett. 50, 1013 (1983)

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Vol. 49, Iss. 23 — 6 December 1982

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