Germain Rousseaux et al 2008 New J. Phys. 10 053015 doi:10.1088/1367-2630/10/5/053015
Observation of negative-frequency waves in a water tank: a classical analogue to the Hawking effect?
Germain Rousseaux1,2, Christian Mathis2, Philippe Maïssa2, Thomas G Philbin3,4 and Ulf Leonhardt3,5
Show affiliationsThe conversion of positive-frequency waves into negative-frequency waves at the event horizon is the mechanism at the heart of the Hawking radiation of black holes. In black-hole analogues, horizons are formed for waves propagating in a medium against the current when and where the flow exceeds the wave velocity. We report on the first direct observation of negative-frequency waves converted from positive-frequency waves in a moving medium. The measured degree of mode conversion is significantly higher than that expected from the theory.
- PACS
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04.70.Dy Quantum aspects of black holes, evaporation, thermodynamics
- Subjects
- Dates
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Issue 5 (May 2008)
Received 24 December 2007
Published 13 May 2008
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Observation of negative-frequency waves in a water tank: a classical analogue to the Hawking effect?
Germain Rousseaux et al 2008 New J. Phys. 10 053015
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