Origin of the thermal radiation in a solid-state analogue of a black hole

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Abstract

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 the horizon disappears for wave numbers with k>kc, and the effective geometry becomes flat. Nevertheless, it is shown that Hawking radiation is still emitted if free field modes with k>kc are in their ground state.

Original languageEnglish
Article number044044
Pages (from-to)1-7
Number of pages7
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume62
Issue number4
DOIs
StatePublished - 2000

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