We consider the question of the definition of thermodynamic-like variables in the context of a statistical thermodynamics, which is a large generalization of Gibbs statistical thermostatics and linear and local-equilibrium classical irreversible thermodynamics. It is based on a nonequilibrium ensemble approach known as the nonequilibrium statistical operator method. Some of these quasithermodynamic variables are characteristic of the nonequilibrium state and go to zero in the limit of local or global equilibrium, but others go over the thermodynamic variables that are present in such a limit. We consider in particular temperature-like variables for the different subsystems of the sample. For illustration we apply the theory to the study of optical properties of highly photoexcited plasma in semiconductors, following a good agreement between theory and experimental data. It is shown that high-resolution spectroscopy provides an excellent experimental testing ground for corroboration of the theoretical concepts, and a quite appropriate way for characterizing and measuring nonequilibrium thermodynamic-like variables.
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8 November 1997
Research Article|
November 08 1997
Thermodynamic variables in the context of a nonequilibrium statistical ensemble approach Available to Purchase
Roberto Luzzi;
Roberto Luzzi
Instituto de Fı́sica “Gleb Wataghin,” Universidade Estadual de Campinas, Unicamp, 13083-970 Campinas, São Paulo, Brazil
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Áurea R. Vasconcellos;
Áurea R. Vasconcellos
Instituto de Fı́sica “Gleb Wataghin,” Universidade Estadual de Campinas, Unicamp, 13083-970 Campinas, São Paulo, Brazil
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David Jou;
David Jou
Departamento de Fisica, Universidad Autónoma de Barcelona, 08193-Bellaterra, Catalonia, Spain
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José Casas-Vázquez
José Casas-Vázquez
Departamento de Fisica, Universidad Autónoma de Barcelona, 08193-Bellaterra, Catalonia, Spain
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Roberto Luzzi
Instituto de Fı́sica “Gleb Wataghin,” Universidade Estadual de Campinas, Unicamp, 13083-970 Campinas, São Paulo, Brazil
Áurea R. Vasconcellos
Instituto de Fı́sica “Gleb Wataghin,” Universidade Estadual de Campinas, Unicamp, 13083-970 Campinas, São Paulo, Brazil
David Jou
Departamento de Fisica, Universidad Autónoma de Barcelona, 08193-Bellaterra, Catalonia, Spain
José Casas-Vázquez
Departamento de Fisica, Universidad Autónoma de Barcelona, 08193-Bellaterra, Catalonia, Spain
J. Chem. Phys. 107, 7383–7396 (1997)
Article history
Received:
February 28 1997
Accepted:
August 07 1997
Citation
Roberto Luzzi, Áurea R. Vasconcellos, David Jou, José Casas-Vázquez; Thermodynamic variables in the context of a nonequilibrium statistical ensemble approach. J. Chem. Phys. 8 November 1997; 107 (18): 7383–7396. https://doi.org/10.1063/1.474976
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