Volume 81, Number 2, January 2008
Article Number 28004
Number of page(s) 3
Section Interdisciplinary Physics and Related Areas of Science and Technology
Published online 06 December 2007
EPL, 81 (2008) 28004
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, Université Libre de Bruxelles Code Postal 231, Campus Plaine, B-1050 Brussels, Belgium

received 22 August 2007; accepted in final form 12 November 2007; published January 2008
published online 6 December 2007

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 $k_{{\rm B}}I$ per erased bit, where I is Shannon's information per bit.

89.70.+c - Information theory and communication theory.
05.70.Ln - Nonequilibrium and irreversible thermodynamics.
02.50.-r - Probability theory, stochastic processes, and statistics.

© EPLA 2008