A black hole in your bathtub
Antonin Coutant
(Quantum Gravity Group, University of Nottingham, UK)
| Quand ? |
Le 19/09/2017, de 10:45 à 12:00 |
|---|---|
| Où ? | Centre Blaise Pascal |
| Participants |
Antonin Coutant |
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I will discuss the possibility to mimic black hole physics in fluid flows. The starting point is an analogy discovered by Unruh between the propagation of sound in a flowing fluid and waves around a black hole. In these analogue setups, it is possible to test various black hole effects. I will focus on the case of the Hawking effect, through which a black hole loses its mass, and its recent experimental verifications. I will also present a recent water wave experiment, where we have observed the analogue of black hole superradiance, that is, the amplification of waves by extraction of angular momentum from a rotating flow.