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Entropy and Computation: The Landauer-Bennett Thesis Reexamined
Department of Philosophy, University of Haifa, Haifa 31905, Israel
Program in the History and Philosophy of Science, The Hebrew University of Jerusalem, Jerusalem 91905, Israel
* Author to whom correspondence should be addressed.
Received: 1 July 2013; in revised form: 2 August 2013 / Accepted: 14 August 2013 / Published: 21 August 2013
Abstract: The so-called Landauer-Bennett thesis says that logically irreversible operations (physically implemented) such as erasure necessarily involve dissipation by at least kln2 per bit of lost information. We identify the physical conditions that are necessary and sufficient for erasure and show that the thesis does not follow from the principles of classical mechanics. In particular, we show that even if one assumes that information processing is constrained by the laws of classical mechanics, it need not be constrained by the Second Law of thermodynamics.
Keywords: entropy; erasure; Landauer-Bennett thesis; macrostates; Second Law of thermodynamics
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Hemmo, M.; Shenker, O. Entropy and Computation: The Landauer-Bennett Thesis Reexamined. Entropy 2013, 15, 3297-3311.
Hemmo M, Shenker O. Entropy and Computation: The Landauer-Bennett Thesis Reexamined. Entropy. 2013; 15(8):3297-3311.
Hemmo, Meir; Shenker, Orly. 2013. "Entropy and Computation: The Landauer-Bennett Thesis Reexamined." Entropy 15, no. 8: 3297-3311.