Effective interactions in the four-mode model of a trapped condensate in two- and three dimensions

H. M. CATALDO; D. M. JEZEK; P. CAPUZZI

Buenos Aires

Conferencia; 27th International Conference on Low Temperature Physics; 2014

We investigate the dynamics of a Bose-Einstein condensate confined by a four-well potential for several potential depths and number of particles. For large number of particles, it has been demonstrated that a reduced interaction energy parameter has to be taken into account to reproduce the dynamics of Bose-Einstein condensates in a four-well system within a multi-mode model. We find that the multi-mode dynamics is qualitatively in accordance with exact Gross-Pitaevskii simulations in two and three dimensions and show that the reduced interaction energy parameter may lead to accurate predictions for the dynamics in Josephson and self trapping regimes for given initial conditions.