Superfluidity in a gas of strongly interacting bosons

Superfluidity in a gas of strongly interacting bosons

We consider small systems of bosonic atoms rotating in a toroidal trap. Using the method of exact numerical diagonalization of the many-body Hamiltonian, we examine the transition from the Bose-Einstein condensed state to the Tonks-Girardeau state. The system supports persistent currents in a wide r...

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Veröffentlicht in:Europhysics letters 2006-10, Vol.76 (2), p.215-221
Hauptverfasser: Kavoulakis, G. M, Yu, Y, Ögren, M, Reimann, S. M
Format: Artikel
Sprache:eng
Schlagworte:
03.75.Lm
05.30.Jp
67.40.-w
Fysik
Natural Sciences
Naturvetenskap
Physical Sciences
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Zusammenfassung:We consider small systems of bosonic atoms rotating in a toroidal trap. Using the method of exact numerical diagonalization of the many-body Hamiltonian, we examine the transition from the Bose-Einstein condensed state to the Tonks-Girardeau state. The system supports persistent currents in a wide range between the two limits, even in the absence of Bose-Einstein condensation.
ISSN:0295-5075
1286-4854
1286-4854
DOI:10.1209/epl/i2006-10264-8