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Type: Artigo de periódico
Title: On entropy production in Informational Statistical Thermodynamics
Author: Luzzi, R
Vasconcellos, AR
Ramos, JG
Abstract: We consider the question of the existence of a generalized H-theorem in the contest of the variational method in the information-theoretical approach that generates the nonequilibrium statistical operator formalism. After briefly reviewing bow the latter provides mechano-statistical foundations for phenomenological irreversible thermodynamics, the so-called Informational Statistical Thermodynamics, we discuss how dissipative phenomena, are accounted for by the procedure. Such effects are related to a, generalized H-theorem and a weak criterion of positive entropy production. These results are a consequence of the definition of a coarse-grained statistical entropy, resulting: from the projection of the full nonequilibrium distribution function on the subspace of the slow relaxing dynamical quantities, that are appropriate for the description of the irreversible evolution of the system from the state of initial preparation.
Country: Brasil
Editor: Sociedade Brasileira Fisica
Citation: Brazilian Journal Of Physics. Sociedade Brasileira Fisica, v. 28, n. 2, n. 97, n. 110, 1998.
Rights: fechado
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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