Bibliographic Details
| Title: |
Observation of negative-frequency waves in a water tank: a classical analogue to the Hawking effect? |
| Authors: |
Rousseaux, Germain1,2, Mathis, Christian2, Maïssa, Philippe2, Philbin, Thomas G.3,4, Leonhardt, Ulf3 ulf@st-andrews.ac.uk |
| Source: |
New Journal of Physics. May2008, Vol. 10 Issue 5, p1-12. 12p. |
| Subjects: |
Blackbody radiation, Supermassive black holes, Gravitational collapse, Thermodynamics, Electric radiation, Quantum field theory, Physics |
| 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 that expected from the theory. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
