Characterization of Topological States on a Lattice with Chern Number
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CitationHafezi, M., A. S. Sørensen, M. D. Lukin, and E. Demler. 2008. Characterization of topological states on a lattice with Chern number. Europhysics Letters 81(1): 10005.
AbstractWe study Chern numbers to characterize the ground state of strongly interacting systems on a lattice. This method allows us to perform a numerical characterization of bosonic fractional quantum Hall (FQH) states on a lattice where the conventional overlap calculation with the known continuum case such as the Laughlin state, breaks down due to the lattice structure or dipole-dipole interaction. The non-vanishing Chern number indicates the existence of a topological order in the degenerate ground-state manifold.
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