2007/02/28 by Sebastian Wüster, S. Wuester, C. M. Savage · 3 citations
Physics and Astronomy · #Atomic physics #Bose–Einstein condensate #Condensed matter physics #Cosmology and Gravitation Theories #Hawking #Hawking radiation #Horizon #Omega #Order (exchange) #Physics #Quantum Electrodynamics and Casimir Effect #Quantum electrodynamics #Quantum mechanics #Strong Light-Matter Interactions #Transverse plane #cond-mat.other
paper · pdf · doi:10.1103/physreva.76.013608
published as Phys. Rev. A 76 (2007) 013608 · 9 pages, 4 figures, replaced with published version
openalex publication_date 2007/07/09 · arxiv created 2007/07/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Quasi-one-dimensional outflow from a dilute gas Bose-Einstein condensate reservoir is a promising system for the creation of analog Hawking radiation. We use numerical modeling to show that stable sonic horizons exist in such a system under realistic conditions, taking into account the transverse dimensions and three-body loss. We find that loss limits the analog Hawking temperatures achievable in the hydrodynamic regime, with sodium condensates allowing the highest temperatures. A condensate of 30\phantom\rule0.2em0ex000 atoms, with transverse confinement frequency \ensuremathω_\ensuremath⊥=6800\ifmmode×\else\texttimes\fi2\ensuremathπ\phantom\rule0.3em0exHz, yields horizon temperatures of about 20\phantom\rule0.3em0exnK over a period of 50\phantom\rule0.3em0exms. This is at least four times higher than for other atoms commonly used for Bose-Einstein condensates.