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January 2008 EPL, 81 (2008) 28004 www.epljournal.org

Summary: January 2008
EPL, 81 (2008) 28004 www.epljournal.org
doi: 10.1209/0295-5075/81/28004
Dynamical randomness, information, and Landauer's principle
D. Andrieux and P. Gaspard
Center for Nonlinear Phenomena and Complex Systems, Universit´e Libre de Bruxelles
Code Postal 231, Campus Plaine, B-1050 Brussels, Belgium
received 22 August 2007; accepted in final form 12 November 2007
published online 6 December 2007
PACS 89.70.+c ­ Information theory and communication theory
PACS 05.70.Ln ­ Nonequilibrium and irreversible thermodynamics
PACS 02.50.-r ­ Probability theory, stochastic processes, and statistics
Abstract ­ New concepts from nonequilibrium thermodynamics are used to show that Landauer's
principle can be understood in terms of time asymmetry in the dynamical randomness generated
by the physical process of the erasure of digital information. In this way, Landauer's principle is
generalized, showing that the dissipation associated with the erasure of a sequence of bits produces
entropy at the rate kBI per erased bit, where I is Shannon's information per bit.
Copyright c EPLA, 2008
Landauer's principle says that the minimal dissipation
accompanying the erasure of one bit of information


Source: Andrieux, David - Service de Physique Non-Linéaire and Mécanique Statistique, Université Libre de Bruxelles


Collections: Physics; Biology and Medicine