2003/11/28 by Aranya B. Bhattacherjee, Emmanuel Courtade, E. Courtade +1
Physics and Astronomy · #Advanced Frequency and Time Standards #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #cond-mat.stat-mech
paper · pdf · doi:10.1088/0953-4075/37/22/001
published as Journal of Physics B: Atomic, Molecular and Optical Physics, 37, 4397-4404 (2004) · 10 pages, 3 figures
arxiv created 2003/11/28 · openalex publication_date 2004/11/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We investigate the possibility of inducing a bosonic current which is rotational in a pseudo 1D quasi-condensate confined in an optical toroidal trap. The stability of such a current is also analysed using a hydrodynamics approach. We find that such a current is uniform when the circular symmetry is preserved and energetically stable when the modes of elementary excitations are restricted to one dimension. This scheme allows us to distinguish between a quasi and a true condensate by measuring the rotational spectra of the sample.