Vortex lattices in rotating atomic bose gases with dipolar interactions |
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Authors: | Cooper N R Rezayi E H Simon S H |
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Institution: | TCM Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, United Kingdom. |
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Abstract: | 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. |
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