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Entropy 2008, 10(3), 380-390; doi:10.3390/e10030380
Article

The Second Entropy: A Variational Principle for Time-dependent Systems

Received: 3 May 2008 / Accepted: 4 September 2008 / Published: 25 September 2008
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Abstract

The fundamental optimization principle for non-equilibrium thermodynamics is given. The second entropy is introduced as the quantity that is maximised to determine the optimum state of a non-equilibrium system. In contrast, the principles of maximum or minimum dissipation, which have previously been proposed by Onsager, Prigogine, and others as the variational principle for such systems, are shown to be incapable of fulfilling that rôle.
Keywords: entropy; second law; non-equilibrium entropy; second law; non-equilibrium
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Attard, P. The Second Entropy: A Variational Principle for Time-dependent Systems. Entropy 2008, 10, 380-390.

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