High- and low-frequency phonon modes in dipolar quantum gases trapped in deep lattices

@article{Maluckov2013HighAL,
  title={High- and low-frequency phonon modes in dipolar quantum gases trapped in deep lattices},
  author={A. Maluckov and G. Gligoric and L. Had{\vz}ievski and B. Malomed and T. Pfau},
  journal={Physical Review A},
  year={2013},
  volume={87}
}
  • A. Maluckov, G. Gligoric, +2 authors T. Pfau
  • Published 2013
  • Physics
  • Physical Review A
  • We study normal modes propagating on top of the stable uniform background in arrays of dipolar Bose-Einstein condensate (BEC) droplets trapped in a deep optical lattice. Both the on-site mean-field dynamics of the droplets and their displacement due to the repulsive dipole-dipole interactions (DDIs) are taken into account. Dispersion relations for two modes, \textit{viz}., high- and low- frequency counterparts of optical and acoustic phonon modes in condensed matter, are derived analytically… CONTINUE READING

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