We study the problem of the energetic cost of information erasure by looking at it through the lens of the Jarzynski equality. We observe that the Landauer bound, < W > >= kT ln 2, on average dissipated work < W > associated to an erasure process, literally emerges from the underlying second law bound as formulated by Kelvin, < W > = 0, as consequence of a spontaneous breaking of the Crooks-Tasaki fluctuation-symmetry, that accompanies logical irreversibility. We illustrate and corroborate this insight with numerical simulations of the process of information erasure performed on a 2D Ising ferromagnet.
Spontaneous Fluctuation-Symmetry Breaking and the Landauer Principle / Buffoni, L; Campisi, M. - In: JOURNAL OF STATISTICAL PHYSICS. - ISSN 0022-4715. - ELETTRONICO. - 186:(2022), pp. 0-0. [10.1007/s10955-022-02877-8]
Spontaneous Fluctuation-Symmetry Breaking and the Landauer Principle
Buffoni, L;Campisi, M
2022
Abstract
We study the problem of the energetic cost of information erasure by looking at it through the lens of the Jarzynski equality. We observe that the Landauer bound, < W > >= kT ln 2, on average dissipated work < W > associated to an erasure process, literally emerges from the underlying second law bound as formulated by Kelvin, < W > = 0, as consequence of a spontaneous breaking of the Crooks-Tasaki fluctuation-symmetry, that accompanies logical irreversibility. We illustrate and corroborate this insight with numerical simulations of the process of information erasure performed on a 2D Ising ferromagnet.
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