Superfluidity in a gas of strongly-interacting bosons

Details Superfluidity in a gas of strongly-interacting bosons Superfluidity in a gas of strongly-interacting bosons

2005-10-12

arxiv.org/abs/cond-mat/0510315v3

Europh. Lett., 76 (2006) 215

Physics

Condensed Matter

Other Condensed Matter

7 pages, 3 figures, revised version, to appear in Europh. Lett

Scientific paper

10.1209/epl/i2006-10264-8

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.

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