"No-hair" and uniqueness results for analogue black holes

Luogo: Aula seminari fisica teorica - 2°piano - Dipartimento di fisica
Ore 9.30

• Florent Michel and Renaud Parentani

LPT, Universitè Paris-Sud, France

Abstract
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, 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.

Responsabile Scientifico
dr. Iacopo Carusotto