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Time Evolution of Relative Entropies for Anomalous Diffusion
AbstractThe entropy production paradox for anomalous diffusion processes describes a phenomenon where one-parameter families of dynamical equations, falling between the diffusion and wave equations, have entropy production rates (Shannon, Tsallis or Renyi) that increase toward the wave equation limit unexpectedly. Moreover, also surprisingly, the entropy does not order the bridging regime between diffusion and waves at all. However, it has been found that relative entropies, with an appropriately chosen reference distribution, do. Relative entropies, thus, provide a physically sensible way of setting which process is “nearer” to pure diffusion than another, placing pure wave propagation, desirably, “furthest” from pure diffusion. We examine here the time behavior of the relative entropies under the evolution dynamics of the underlying one-parameter family of dynamical equations based on space-fractional derivatives.
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Prehl, J.; Boldt, F.; Essex, C.; Hoffmann, K.H. Time Evolution of Relative Entropies for Anomalous Diffusion. Entropy 2013, 15, 2989-3006.View more citation formats
Prehl J, Boldt F, Essex C, Hoffmann KH. Time Evolution of Relative Entropies for Anomalous Diffusion. Entropy. 2013; 15(8):2989-3006.Chicago/Turabian Style
Prehl, Janett; Boldt, Frank; Essex, Christopher; Hoffmann, Karl H. 2013. "Time Evolution of Relative Entropies for Anomalous Diffusion." Entropy 15, no. 8: 2989-3006.