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Exact Ground States of Rotating Bose Gases Close to a Feshbach Resonance

2004; American Physical Society; Volume: 92; Issue: 22 Linguagem: Inglês

10.1103/physrevlett.92.220405

1092-0145

Nigel R. Cooper,

Physics of Superconductivity and Magnetism

We study the groundstates of rotating Bose gases when interactions are affected by a nearby Feshbach resonance. We show that exact groundstates at high angular momentum can be found analytically for a general and realistic model for the resonant interactions. We identify parameter regimes where the exact groundstates are exotic fractional quantum Hall states, the excitations of which obey non-abelian exchange statistics.