Dipolar Bosons in a Planar Array of One-Dimensional Tubes
Corinna Kollath, Julia S. Meyer, Thierry Giamarchi
We investigate bosonic atoms or molecules interacting via dipolar interactions in a planar array of one-dimensional tubes. We consider the situation in which the dipoles are oriented perpendicular to the tubes by an external field. We find various quantum phases reaching from a "sliding Luttinger liquid" phase to a two-dimensional charge density wave ordered phase. Two different kinds of charge density wave order occur: a stripe phase in which the bosons in different tubes are aligned and a checkerboard phase. We further point out how to distinguish the occurring phases experimentally.
arXiv:0711.0889•Physical Review Letters•Apr 3, 2008•49 citations