Origin of the Thermal Radiation in a Solid-State Analog of a Black-Hole

Details Origin of the Thermal Radiation in a Solid-State Analog of a Black-Hole Origin of the Thermal Radiation in a Solid-State Analog of a Black-Hole

1997-03-26

arxiv.org/abs/gr-qc/9703076v1

Phys.Rev. D62 (2000) 044044

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 Pages, 3 figures, Revtex with epsf macros

Scientific paper

10.1103/PhysRevD.62.044044

An effective black-hole-like horizon occurs, for electromagnetic waves in
matter, at a surface of singular electric and magnetic permeabilities. In a
physical dispersive medium this horizon disappears for wave numbers with
$k>k_c$. Nevertheless, it is shown that Hawking radiation is still emitted if
free field modes with $k>k_c$ are in their ground state.

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