A numerical study of the ground state and dynamics of atomicmolecular BoseEinstein condensates
In this paper, we numerically investigate the ground-state structure and dynamics of atomicmolecular BoseEinstein condensates at zero temperature, which are modeled by coupled GrossPitaevskii equations (GPEs). To get the ground state, we evolve a gradient flow with discrete normalization numerically. To study the dynamics, we employ an efficient numerical methodthe time-splitting Fourier pseudospectral method for solving the coupled GPEs. The proposed numerical methods have been numerically tested and employed in studying the mechanism on how an atomic condensate can be converted into an atomicmolecular mixture or a pure molecular condensate from an atomic condensate either in equilibrium or dynamically.
atomicmolecular boseeinstein condensates coupled grosspitaevskii equations numerical simulation