Persistent currents in a two-component Bose-Einstein condensate confined in a ring potential

Abstract

We present variational and numerical solutions for the problem of stability of persistent currents in a two-component Bose-Einstein condensate of distinguishable atoms which rotate in a ring potential. We consider the general class of solutions of constant density in the two components separately, thus providing an alternative approach of the solution of the same problem given recently by Zhigang Wu and Eugene Zaremba [Phys. Rev. A {\bf 88}, 063640 (2013)]. Our approach provides a physically transparent solution of this delicate problem. Finally, we give a unified and simple picture of the lowest-energy state of the system for large values of the coupling.

Published version

References in corpus (3)

• Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
• Persistent currents in spinor condensates
• Cold atom confinement in an all-optical dark ring trap

Cited by in corpus (4)

• Persistent currents in ultracold gases
• Excitation spectrum of a mixture of two Bose gases confined in a ring potential with interaction asymmetry
• Mean-field yrast spectrum and persistent currents in a two-component Bose gas with interaction asymmetry
• Rotational properties of superfluid Fermi-Bose mixtures in a tight toroidal trap