Volume 76, Number 2, October 2006
|Page(s)||215 - 221|
|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
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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.