A Bose–Einstein condensate in a double-well and periodic potential: a variational study

摘要: The dynamics of a Bose?Einstein condensate under the influence confining double-well potential and periodic (optical lattice) is studied by well-known variational method. principle leads to coupled nonlinear differential equations for amplitude (width), chirp, center position frequency condensate. interplay between parameters various regimes its time evolution which depend on relative strengths potentials. In particular, we show that adjusting applied potentials appropriately, one can control manipulate in several ways including tunneling from well other to-and-fro motion two wells.