Vortex lattices in rotating atomic bose gases with dipolar interactions.
We show that dipolar interactions have dramatic effects on the ground states of rotating atomic Bose gases in the weak-interaction limit. With increasing dipolar interaction (relative to the net contact interaction), the mean field, or high filling factor, ground state undergoes a series of transitions between vortex lattices of different symmetries: triangular, square, "stripe," and "bubble" phases. We also study the effects of dipolar interactions on the quantum fluids at low filling factors. We show that the incompressible Laughlin state at filling factor nu = 1/2 is replaced by compressible stripe and bubble phases.
Cooper
N R
NR
TCM Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom.
Rezayi
E H
EH
Simon
S H
SH