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The Simply Uninformed Thermodynamics of Erasure

Norton, John D. (2025) The Simply Uninformed Thermodynamics of Erasure. Philosophy of Physics, 3(1) (3). pp. 1-21. ISSN 2753-5908

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Abstract

1. Strong and weak notions of erasure are distinguished according to whether the single erasure procedure does or does not leave the environment in the same state independently of the pre-erasure state.

2. Purely thermodynamic considerations show that strong erasure cannot be dissipationless.

3. The main source of entropy creation in erasure processes at molecular scales is the entropy that must be created to suppress thermal fluctuations (“noise”).

4. A phase space analysis recovers no minimum entropy cost for weak erasure and a positive minimum entropy cost for strong erasure.

5. An information entropy term has been attributed mistakenly to pre-erasure states in the Gibbs formalism through the neglect of an additive constant in the “–k sum p log p” Gibbs entropy formula.


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Item Type: Published Article or Volume
Creators:
CreatorsEmailORCID
Norton, John D.0000-0003-0936-5308
Additional Information: Open access. CC Attribution 4.0
Keywords: entropy, erasure, fluctuations, information, Landauer's principle, thermodynamics
Subjects: Specific Sciences > Physics > Statistical Mechanics/Thermodynamics
Depositing User: John Norton
Date Deposited: 23 Feb 2025 14:27
Last Modified: 23 Feb 2025 14:27
Item ID: 24797
Journal or Publication Title: Philosophy of Physics
Publisher: LSE Press
Official URL: https://philosophyofphysics.lse.ac.uk/articles/10....
DOI or Unique Handle: DOI: https://doi. org/10.31389/pop.154
Subjects: Specific Sciences > Physics > Statistical Mechanics/Thermodynamics
Date: 13 February 2025
Page Range: pp. 1-21
Volume: 3(1)
Number: 3
ISSN: 2753-5908
URI: https://philsci-archive.pitt.edu/id/eprint/24797

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