Sonic black holes with thick horizons in BECs
Phys. Rev. D 114, 065030 – Published 29 September, 2026
DOI: https://doi.org/10.1103/8hsh-96jl
Abstract
We consider simple one dimensional models of acoustic black holes formed by Bose-Einstein condensates where the flow is stepwise homogeneous. We 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 is 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.
