Three-dimensional dynamics of vortex-lattice formation in Bose-Einstein condensates

Journal Article · Wed Jun 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.063616· OSTI ID:20717958

Kasamatsu, Kenichi ^[1]; Machida, Masahiko; Sasa, Narimasa ^[2]; Tsubota, Makoto ^[3]

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1. Department of General Education, Ishikawa National College of Technology, Tsubata, Ishikawa 929-0392 (Japan)
2. CCSE, Japan Atomic Energy Research Institute, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015 (Japan)
3. Department of Physics, Osaka City University, Sumiyoshi-Ku, Osaka 558-8585 (Japan)

We numerically study the dynamics of vortex lattice formation in a rotating cigar-shaped Bose-Einstein condensate. The study is a three-dimensional simulation of the Gross-Pitaevskii equation with a phenomenological dissipation term. The simulations reveal previously unknown dynamical features of the vortex nucleation process, in which the condensate undergoes a strongly turbulent stage and the penetrating vortex lines vibrate rapidly. The vibrations arise from spontaneous excitation of Kelvin waves on the protovortices during a surface wave instability, caused by an inhomogeneity of the condensate density along the elongated axial direction.

• OSTI ID: 20717958
• Journal Information: Physical Review. A, Vol. 71, Issue 6; Other Information: DOI: 10.1103/PhysRevA.71.063616; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
COMPUTERIZED SIMULATION
DENSITY
EXCITATION
INSTABILITY
LIQUIDS
NONLINEAR PROBLEMS
SUPERFLUIDITY
SURFACES
THREE-DIMENSIONAL CALCULATIONS
VORTICES
WAVE EQUATIONS