Topological Quantum Liquids with Long-Range Couplings.
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DOI: 10.1103/physrevlett.118.267002
Abstract: Very few topological systems with long-range couplings have been considered so far due to our lack of analytic approaches. Here we extend the Kitaev chain, a 1D quantum liquid, to infinite-range couplings and study its… read more here.
Keywords: range couplings; range; quantum liquids; long range ... See more keywords
From Light-Cone to Supersonic Propagation of Correlations by Competing Short- and Long-Range Couplings.
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DOI: 10.1103/tt11-vcpr
Abstract: We investigate the dynamical spreading of correlations in many-body quantum systems with competing short- and global-range couplings. We monitor the nonequilibrium dynamics of the correlations following a quench, showing that for strong short-range couplings the… read more here.
Keywords: light cone; competing short; range couplings; propagation correlations ... See more keywords