Séminaire / Seminar GReCO |
| « No-hair and uniqueness results for analogue black holes » |
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F. Michel |
| The seminal work of Unruh (1981) established a precise correspondence between linear perturbations in non-relativistic moving media and free relativistic fields in curved space-times. It lead to analogue models aimed at better understanding Hawking radiation through condensed matter and conversely. Surprisingly, the analogy partially extends to the non-linear level, where analogue black hole flows obey uniqueness and no-hair results reminiscent of those for black holes in general relativity. In this talk, after a brief introduction to analogue gravity I will show the uniqueness of black hole flows in Bose-Einstein condensates. I will then introduce the basics of Whitham's modulation theory and show how it allows for a precise characterization of the waves emitted by the formation of an analogue black hole. |
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lundi 25 avril 2016 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |