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  Self-organization without heat: the geometric ratchet effect

Smerlak, M., & Youssef, A. (in preparation). Self-organization without heat: the geometric ratchet effect.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-E9D5-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-E9D6-6
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1206.3441 (Preprint), 244KB
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1206.3441
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File downloaded from arXiv at 2013-03-25 11:38
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 Creators:
Smerlak, Matteo1, Author              
Youssef, Ahmed, Author
Affiliations:
1Microscopic Quantum Structure & Dynamics of Spacetime, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_67201              

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Free keywords: Physics, General Physics, physics.gen-ph, Condensed Matter, Statistical Mechanics, cond-mat.stat-mech
 Abstract: We point out a surprising feature of diffusion in inhomogeneous media: under suitable conditions, the rectification of the Brownian paths by a diffusivity gradient can result in initially spread tracers spontaneously concentrating. This "geometric ratchet effect" demonstrates that, in violation of the classical statements of the second law of (non-equilibrium) thermodynamics, self-organization can take place in thermodynamic systems at local equilibrium without heat being produced or exchanged with the environment. We stress the role of Bayesian priors in a suitable reformulation of the second law accommodating this geometric ratchet effect.

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 Dates: 2012-06-15
 Publication Status: Not specified
 Pages: 8 pages, 4 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1206.3441
URI: http://arxiv.org/abs/1206.3441
 Degree: -

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