title: Blackbody Theory for Hyperbolic Materials.
abstract: The blackbody theory is revisited in the case of thermal electromagnetic fields inside uniaxial anisotropic media in thermal equilibrium with a heat bath. When these media are hyperbolic, we show that the spectral energy density of these fields radically differs from that predicted by Planck's blackbody theory and that the maximum of the spectral energy density determined by Wien's law is redshifted. Finally, we derive the Stefan-Boltzmann law for hyperbolic media which becomes a quadratic function of the heat bath temperature.
authors.affiliation: Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany.
authors.forename: Svend-Age
authors.initials: SA
authors.lastname: Biehs
authors.affiliation: Institute of Optical and Electronic Materials, Hamburg University of Technology, 21073 Hamburg, Germany.
authors.forename: Slawa
authors.initials: S
authors.lastname: Lang
authors.affiliation: Institute of Optical and Electronic Materials, Hamburg University of Technology, 21073 Hamburg, Germany.|ITMO University, 49 Kronverskii Ave., 197101 St. Petersburg, Russia.
authors.forename: Alexander Yu
authors.initials: AY
authors.lastname: Petrov
authors.affiliation: Institute of Optical and Electronic Materials, Hamburg University of Technology, 21073 Hamburg, Germany.
authors.forename: Manfred
authors.initials: M
authors.lastname: Eich
authors.affiliation: Laboratoire Charles Fabry,UMR 8501, Institut d'Optique, CNRS, Université Paris-Sud 11, 2, Avenue Augustin Fresnel, 91127 Palaiseau Cedex, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Ben-Abdallah