2002/01/31 by P. Rosenbusch, D. S. Petrov, S. Sinha +11 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #Strong Light-Matter Interactions #cond-mat.mes-hall #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevlett.88.250403
published as Phys. Rev. Lett. 88, 250403 (2002). · 4 pages, 4 figures, submitted to PRL
arxiv created 2002/03/08 · openalex publication_date 2002/06/07 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study experimentally and theoretically a cold trapped Bose gas under critical rotation, i.e., with a rotation frequency close to the frequency of the radial confinement. We identify two regimes: the regime of explosion where the cloud expands to infinity in one direction, and the regime where the condensate spirals out of the trap as a rigid body. The former is realized for a dilute cloud, and the latter for a condensate with the interparticle interaction exceeding a critical value. This constitutes a novel system in which repulsive interactions help in maintaining particles together.