A variational approach to Bogoliubov excitations and dynamics of dipolar Bose – Einstein condensates

@inproceedings{Kreibich2013AVA,
title={A variational approach to Bogoliubov excitations and dynamics of dipolar Bose – Einstein condensates},
author={Manuel Kreibich and J{\"o}rg Main and G. Wunner},
year={2013}
}

We investigate the stability properties and the dynamics of Bose–Einstein condensates with axial symmetry, especially with dipolar long-range interaction, using both simulations on grids and variational calculations. We present an extended variational ansatz which is applicable for axial symmetry and show that this ansatz can reproduce the lowest eigenfrequencies of the Bogoliubov spectrum, and also the corresponding eigenfunctions. Our variational ansatz is capable of describing the roton… CONTINUE READING