发表机构
Universidad de Valencia-CSIC; INFN sezione di Bologna（瓦伦西亚大学-西班牙国家科学研究委员会; 博洛尼亚意大利国家核物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究玻色-爱因斯坦凝聚体形成的声学黑洞一维模型，关注有扩展声区（厚视界）的情况，通过研究产生的粒子数和密度-密度关联函数，为识别声学黑洞中霍金辐射提供实验工具。
AI 中文摘要
我们考虑由玻色-爱因斯坦凝聚体形成的声学黑洞的简单一维模型，其中流动是分段均匀的。我们将专注于存在扩展声区的情况，即流速恰好等于声速的区域。这些模型可被视为具有厚视界的声学黑洞。将特别关注产生的粒子数和密度-密度关联函数，后者目前是识别声学黑洞中霍金辐射的实验工具。
英文摘要
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.
Comments36 pages, 22 figures. Final version
Journal refPhys. Rev. D114 (2026), 065030
