Formation of molecules in an expanding Bose-Einstein condensate

V. A. Yurovsky, A. Ben-Reuven

Research output: Contribution to journalArticlepeer-review

Abstract

The formation of hybrid atom-molecules in an expanding Bose-Einstein condensates (BEC) with application to experiments of Rempe group on 87Rb, was analyzed. In the case of 87Rb, using a weak Feschbach resonance, a mean-field (MF) approach was used to describe molecular association process. It was observed that non-MF calculations which used parametric approximation (PA) method, produced energy spectrum of entangled noncondensate atom pairs formed by molecular dissociation in forward sweep, following the association. The results show that optimal conditions for formation of molecular BEC in backward sweep exhibits existence of an optimal ramp speed which depends on resonance strength and initial gas density.

Original languageEnglish
Article number013613
Pages (from-to)013613-1-013613-5
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume70
Issue number1
DOIs
StatePublished - Jul 2004

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