Information theory in the study of anisotropic radiation

Details Information theory in the study of anisotropic radiation Information theory in the study of anisotropic radiation

1997-09-09

arxiv.org/abs/cond-mat/9709104v1

Physics

Condensed Matter

Statistical Mechanics

1 eps figure upon request by e-mail, to appear in Journal of Physics A

Scientific paper

10.1088/0305-4470/30/22/010

Information theory is used to perform a thermodynamic study of non equilibrium anisotropic radiation. We limit our analysis to a second-order truncation of the moments, obtaining a distribution function which leads to a natural closure of the hierarchy of radiative transfer equations in the so-called variable Eddington factor scheme. Some Eddington factors appearing in the literature can be recovered as particular cases of our two-parameter Eddington factor. We focus our attention in the study of the thermodynamic properties of such systems and relate it to recent nonequilibrium thermodynamic theories. Finally we comment the possibility of introducing a nonequilibrium chemical potential for photons.

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