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? >= kTln 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
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? >= kTln 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.File in questo prodotto:
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