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General Relativity and Quantum Cosmology

arXiv:0711.4767 (gr-qc)
[Submitted on 29 Nov 2007 (v1), last revised 1 Mar 2008 (this version, v3)]

Title:Observation of negative-frequency waves in a water tank: A classical analogue to the Hawking effect?

Authors:Germain Rousseaux, Christian Mathis, Philippe Maissa, Thomas G. Philbin, Ulf Leonhardt
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Abstract: The 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 expected from theory.
Subjects: General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:0711.4767 [gr-qc]
  (or arXiv:0711.4767v3 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.0711.4767
Journal reference: NewJ.Phys.10:053015,2008
Related DOI: https://doi.org/10.1088/1367-2630/10/5/053015

Submission history

From: Ulf Leonhardt [view email]
[v1] Thu, 29 Nov 2007 16:33:08 UTC (263 KB)
[v2] Mon, 14 Jan 2008 15:36:58 UTC (729 KB)
[v3] Sat, 1 Mar 2008 11:52:39 UTC (899 KB)
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