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  • Title: Global phase diagram of the fractional quantum Hall effect arising from repulsive three-body interactions.
    Author: Wójs A, Toke C, Jain JK.
    Journal: Phys Rev Lett; 2010 Nov 05; 105(19):196801. PubMed ID: 21231190.
    Abstract:
    The model of fermions in a magnetic field interacting via a purely three-body repulsive interaction has attracted interest because it produces, in the limit of short range interaction, the Pfaffian state with non-Abelian excitations. We show that this is part of a rich phase diagram containing a host of fractional quantum Hall states, a composite fermion Fermi sea, and a pairing transition. This is entirely unexpected, because the appearance of composite fermions and fractional quantum Hall effect is ordinarily thought to be a result of strong two-body repulsion. Recent breakthroughs in ultracold atoms have facilitated the realization of such a system, where this physics can be tested.
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