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Spectral properties of acoustic black hole radiation: Broadening the horizon
Stefano Finazzi, Renaud Parentani
The sensitivity of the black hole spectrum when introducing short distance dispersion is studied in the context of atomic Bose condensates. By considering flows characterized by se…
Acoustic white holes in flowing atomic Bose-Einstein condensates
Carlos Mayoral, Alessio Recati, Alessandro Fabbri +3
We study acoustic white holes in a steadily flowing atomic Bose-Einstein condensate. A white hole configuration is obtained when the flow velocity goes from a super-sonic value in…
Black hole lasers in Bose-Einstein condensates
Stefano Finazzi, Renaud Parentani
We consider elongated condensates that cross twice the speed of sound. In the absence of periodic boundary conditions, the phonon spectrum possesses a discrete and finite set of co…
From vacuum fluctuations across an event horizon to long distance correlations
Renaud Parentani
We study the stress energy two-point function to show how short distance correlations across the horizon transform into correlations among asymptotic states, for the Unruh effect,…