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arXiv · 2607.11396

Sonic black holes with thick horizons in BECs

Daniel Peñalver·Marco De Vito·Roberto Balbinot·Alessandro Fabbri
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Abstract

We consider simple one dimensional models of acoustic black holes formed by Bose-Einstein condensates where the flow is stepwise homogeneous. We shall concentrate on the case in which an extended sonic region is present, i.e. a region where the flow velocity equals exactly the speed of sound. These models can be thought of as acoustic black holes with a thick horizon. Particular attention will be devoted to the number of created particles and to the density-density correlation functions, these latter being at present time the experimental tool to identify Hawking like radiation in acoustic black holes.

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Daniel Peñalver, Marco De Vito, Roberto Balbinot, Alessandro Fabbri. 2026-07-13. Sonic black holes with thick horizons in BECs. https://arxiv.org/abs/2607.11396

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