Superfluidity in a gas of strongly-interacting bosons

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.

arXiv comment7 pages, 3 figures, revised version, to appear in Europh. Lett

References in corpus (4)

• Motion of a heavy impurity through a Bose-Einstein condensate
• Supercurrent Stability in a Quasi-1D Weakly Interacting Bose Gas
• The Dynamic Structure Factor of the 1D Bose Gas near the Tonks-Girardeau Limit
• Superfluidity versus Bloch oscillations in confined atomic gases

Cited by in corpus (7)

• Solitary waves and yrast states in Bose-Einstein condensed gases of atoms
• Metastability of persistent currents in trapped gases of atoms
• Excitation spectrum of a mixture of two Bose gases confined in a ring potential with interaction asymmetry
• Stability of persistent currents in a Bose-Einstein condensate confined in a toroidal trap
• Hysteresis and metastability of Bose-Einstein condensed clouds of atoms confined in ring potentials
• Persistent currents in a Bose-Einstein condensate in the presence of disorder
• On the theory of superfluidity