Classifying Novel Phases of Spinor Atoms

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Classifying Novel Phases of Spinor Atoms

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Title: Classifying Novel Phases of Spinor Atoms
Author: Barnett, Ryan; Turner, Ari; Demler, Eugene A.

Note: Order does not necessarily reflect citation order of authors.

Citation: Barnett, Ryan, Ari Turner, and Eugene Demler. 2006. “Classifying Novel Phases of Spinor Atoms.” Physical Review Letters 97 (18) (November 3). doi:10.1103/physrevlett.97.180412.
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Abstract: We consider many-body states of bosonic spinor atoms which, at the mean-field level, can be
characterized by a single-particle wave function for the Bose-Einstein condensation and Mott insulating states. We describe and apply a classification scheme that makes explicit the spin symmetries of such states and enables one to naturally analyze their collective modes and topological excitations. Quite generally, the method allows classification of a spin F system as a polyhedron with 2F vertices. We apply the method to the many-body states of bosons with spins two and three. For spin-two atoms we find the ferromagnetic state, a continuum of nematic states, and a state having the symmetry of the point group of the regular tetrahedron. For spin-three atoms we obtain similar ferromagnetic and nematic phases as well as states having symmetries of various types of polyhedra with six vertices.
Published Version: doi:10.1103/PhysRevLett.97.180412
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