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Comment on “Black Hole Entropy: A Closer Look” Pessoa, Pedro; Arderucio Costa, Bruno

Abstract

In a recent paper (Entropy 2020, 22(1), 17), Tsallis states that entropy—as in Shannon or Kullback–Leiber’s definitions—is inadequate to interpret black hole entropy and suggests that a new non-additive functional should take the role of entropy. Here we counterargue by explaining the important distinction between the properties of extensivity and additivity; the latter is fundamental for entropy, while the former is a property of particular thermodynamical systems that is not expected for black holes. We also point out other debatable statements in his analysis of black hole entropy.

Item Metadata

Title
Comment on “Black Hole Entropy: A Closer Look”
Creator
Pessoa, Pedro; Arderucio Costa, Bruno
Publisher
Multidisciplinary Digital Publishing Institute
Date Issued
2020-10-01
Description
In a recent paper (Entropy 2020, 22(1), 17), Tsallis states that entropy—as in Shannon or Kullback–Leiber’s definitions—is inadequate to interpret black hole entropy and suggests that a new non-additive functional should take the role of entropy. Here we counterargue by explaining the important distinction between the properties of extensivity and additivity; the latter is fundamental for entropy, while the former is a property of particular thermodynamical systems that is not expected for black holes. We also point out other debatable statements in his analysis of black hole entropy.
Subject
black holes; entropy; non-additive entropies; thermodynamics; inference
Genre
Article
Type
Text
Language
eng
Date Available
2020-11-04
Provider
Vancouver : University of British Columbia Library
Rights
CC BY 4.0
DOI
10.14288/1.0394904
URI
http://hdl.handle.net/2429/76454
Affiliation
Science, Faculty of; Non UBC; Physics and Astronomy, Department of
Citation
Entropy 22 (10): 1110 (2020)
Publisher DOI
10.3390/e22101110
Peer Review Status
Reviewed
Scholarly Level
Faculty
Rights URI
https://creativecommons.org/licenses/by/4.0/
Aggregated Source Repository
DSpace

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CC BY 4.0