



01051nas a2200133   4500008004100000245010600041210006900147260001500216520058800231100001900819700001900838700002300857856003700880       2007                        eng d00aCoherent, adiabatic and dissociation regimes in coupled atomic-molecular  Bose-Einstein condensates
0 aCoherent adiabatic and dissociation regimes in coupled atomicmol  c2007/11/023 a  We discuss the dynamics of a Bose-Einstein condensate of atoms which is
suddenly coupled to a condensate of molecules by an optical or magnetic
Feshbach resonance. Three limiting regimes are found and can be understood from
the transient dynamics occuring for each pair of atoms. This transient dynamics
can be summarised into a time-dependent shift and broadening of the molecular
state. A simple Gross-Pitaevskii picture including this shift and broadening is
proposed to describe the system in the three regimes. Finally, we suggest how
to explore these regimes experimentally.
1 aNaidon, Pascal1 aTiesinga, Eite1 aJulienne, Paul, S.  uhttp://arxiv.org/abs/0711.0397v2