Landauer's principle and the conservation of information

Abstract Erasure of information requires the dissipation of a minimal amount of energy as being formulated in Landauer's principle. This profound concept in information processing has recently been derived by use of basic dynamical principles of statistical mechanics. We present an alternative derivation of Landauer's principle based on dynamical principles and certain properties of the Shannon–Gibbs–Boltzmann entropy, in particular, (sub-)additivity.

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