Multi-vortex phase transitions in rotating Bose-Einstein condensates

Journal Article · Fri Jul 08 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1996873· OSTI ID:20722997

Vorov, O K ^[1]; Van Isacker, P ^[2]; Hussein, M S ^[3]; Kun, S Yu ^[4]; Bartschat, K ^[1]

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1. Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States)
2. Grand Accelerateur National d'Ions Lourds, BP 5027, F-14076, Caen, Cedex 5 (France)
3. Instituto de Fisica, Universidade de Sao Paulo CP 66318, 05315-970, Sao Paulo (Brazil)
4. Centro de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Cuernavaca, Morelos (Mexico)

We study the lowest energy states of a weakly interacting trapped atomic Bose-Einstein condensate in both quantum and classical cases. An analytic expression for the ground-state wavefunction of a rotating Gross-Pitaevskii condensate of trapped atoms describes the onset of vorticity in an accelerated trap, starting from the vortex entry followed by formation of growing symmetric Wigner molecules. Within a unified picture, it explains the staircase of the angular momentum jumps and the behavior of the bosonic occupancies observed in numerical and variational studies. The similarity of this behavior and mesoscopic superconductors is discussed.

• OSTI ID: 20722997
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 777; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
ATOMS
BOSE-EINSTEIN CONDENSATION
GROUND STATES
MOLECULES
PHASE TRANSFORMATIONS
SUPERCONDUCTORS
TRAPPING
TRAPS
VARIATIONAL METHODS
VORTICES
WAVE EQUATIONS
WAVE FUNCTIONS