Persistent currents in a Bose-Einstein condensate in the presence of disorder

Abstract

We examine bosonic atoms that are confined in a toroidal, quasi-one-dimensional trap, subjected to a random potential. The resulting inhomogeneous atomic density is smoothened for sufficiently strong, repulsive interatomic interactions. Statistical analysis of our simulations show that the gas supports persistent currents, which become more fragile due to the disorder.

5 pages, RevTex, 3 figures, revised version, to appear in JLTP

References in corpus (3)

• Ultracold Bose Gases in 1D Disorder: From Lifshits Glass to Bose-Einstein Condensate
• Smoothing effect and delocalization of interacting Bose-Einstein condensates in random potentials
• Manipulating Bose-Einstein condensed atoms in toroidal traps

Cited by in corpus (4)

• 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
• Scale invariant thermodynamics of a toroidally trapped Bose gas
• Geometric scale invariance as a route to macroscopic degeneracy: loading a toroidal trap with a Bose or Fermi gas