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Superfluidity in a gas of strongly-interacting bosons

G. M. Kavoulakis·Y. Yu·M. Ogren·S. M. Reimann
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Abstract

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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G. M. Kavoulakis, Y. Yu, M. Ogren, S. M. Reimann. 2006-09-15. Superfluidity in a gas of strongly-interacting bosons. https://doi.org/10.1209/epl%2Fi2006-10264-8

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