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 and the effective geometry becomes flat. Nevertheless, it is shown that Hawking radiation is still emitted if free field modes with are in their ground state.
- Received 31 January 2000
DOI:https://doi.org/10.1103/PhysRevD.62.044044
©2000 American Physical Society