| Issue |
Europhys. Lett.
Volume 76, Number 2, October 2006
|
|
|---|---|---|
| Page(s) | 215 - 221 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2006-10264-8 | |
| Published online | 20 September 2006 | |
Superfluidity in a gas of strongly interacting bosons
Mathematical Physics, LTH, Lund University - P.O. Box 118, S-22100 Lund, Sweden
Received:
2
July
2006
Accepted:
29
August
2006
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.
PACS: 05.30.Jp – Boson systems / 03.75.Lm – Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations / 67.40.-w – Boson degeneracy and superfluidity of 4He
© EDP Sciences, 2006
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