Nonequilibrium Stefan-Boltzmann law
arXiv:1002.0794 · doi:10.1515/jnetdy.2010.017
Abstract
We study thermal radiation outside equilibrium. The situation considered consists of two bodies emitting photons at two different temperatures. We show that the system evolves to a stationary state characterized by an energy current which satisfies a Stefan-Boltzmann-like law expressing it as the difference of the temperatures to the fourth power of the emitters . The results obtained show how the classical laws governing the thermal radiation at equlibrium can be generalized away from equilibrium situations.
9 pages, 1 figure. To be published in J. Noneq. Therm
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