Numerical study of a recent black hole lasing experiment
Abstract
We theoretically analyse a recent experiment reporting the observation of a self-amplifying Hawking radiation in a flowing atomic condensate [J.Steinhauer, Nature Physics, vol.10, pp.864, Nov 2014]. We are able to accurately reproduce the experimental observations using a theoretical model based on the numerical solution of a mean-field Gross-Pitaevskii equation that does not include quantum fluctuations of the matter field. In addition to confirming the black hole lasing mechanism, our results show that the underlying dynamical instability has a classical hydrodynamic origin and is triggered by a seed of deterministic nature, linked to the non-stationary of the process, rather than by thermal or zero-point fluctuations.
Cite
@article{arxiv.1603.04702,
title = {Numerical study of a recent black hole lasing experiment},
author = {M. Tettamanti and S. L. Cacciatori and A. Parola and I. Carusotto},
journal= {arXiv preprint arXiv:1603.04702},
year = {2016}
}
Comments
9 pages. This version matches the published version