Atom loss from the ${}^{85}$Rb Bose-Einstein condensate by a Feshbach resonance

Abstract

Loss of atoms from a ${}^{85}$Rb condensate on passage through a Feshbach resonance is analyzed using the generalized parametric approximation that takes into account quantum many-body effects. These effects lead to a substantial increase of the losses. A better agreement with experiments is achieved, compared to predictions of mean-field theories. The method provides much insight into the quantum effects involved, and on the nature of entangled atom pairs produced by the loss.

LaTeX, 6 pages with 4 figures

References in corpus (1)

• Formation of a molecular Bose-Einstein condensate and an entangled atomic gas by Feshbach resonance

Cited by in corpus (3)

• Heating and atom loss during upward ramps of Feshbach resonance levels in Bose-Einstein condensates
• Formation of molecules from a Cs Bose-Einstein condensate
• Formation of molecules in an expanding Bose-Einstein condensate