Barrier resonances in Bose-Einstein condensation

摘要

We study the dynamics of the mean field model of a Bose-Einstein condensedatom cloud in a parametrically forced trap by using analytical and numericaltechniques. The dynamics is related to a classical Mathieu oscillator in asingular potential. It is found that there are wide resonances which canstrongly affect the dynamics even when dissipation is present. Differentgeometries of the forcing are discussed, as well as the implications of ourresults.