Microscopic theory of atom-molecule oscillations in a Bose-Einstein condensate

Details Microscopic theory of atom-molecule oscillations in a Bose-Einstein condensate Microscopic theory of atom-molecule oscillations in a Bose-Einstein condensate

2002-09-04

arxiv.org/abs/cond-mat/0209100v1

Phys. Rev. A 67, 013601 (2003)

Physics

Condensed Matter

18 pages, 20 figures

Scientific paper

10.1103/PhysRevA.67.013601

In a recent experiment at JILA [E.A. Donley et al., Nature (London) 417, 529 (2002)] an initially pure condensate of Rb-85 atoms was exposed to a specially designed time dependent magnetic field pulse in the vicinity of a Feshbach resonance. The production of new components of the gas as well as their oscillatory behavior have been reported. We apply a microscopic theory of the gas to identify these components and determine their physical properties. Our time dependent studies allow us to explain the observed dynamic evolution of all fractions, and to identify the physical relevance of the pulse shape. Based on ab initio predictions, our theory strongly supports the view that the experiments have produced a molecular condensate.

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