Is Sharma-Mittal entropy really a step beyond Tsallis and Renyi entropies?

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We studied the Sharma-Mittal relative entropy and showed that its physical meaning is the free energy difference between the off-equilibrium and equilibrium distributions. Unfortunately, Sharma-Mittal relative entropy may acquire this physical interpretation only in the limiting case when both parameters approach to 1 in which case it approaches Kullback-Leibler entropy. We also note that this is exactly how Rényi relative entropy behaves in the thermostatistical framework thereby suggesting that Sharma-Mittal entropy must be thought to be a step beyond not both Tsallis and Rényi entropies but rather only as a generalization of Rényi entropy from a thermostatistical point of view. Lastly, we note that neither of them conforms to the Shore-Johnson theorem which is satisfied by Kullback-Leibler entropy and one of the Tsallis relative entropies.
9 pages

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Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/125457

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0703277
 http://arxiv.org/abs/cond-mat/0703277

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arXiv