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Bounds on Information Propagation in Disordered Quantum Spin Chains

Christian K. Burrell·Tobias J. Osborne
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Abstract

We investigate the propagation of information through the disordered XY model. We find, with a probability that increases with the size of the system, that all correlations, both classical and quantum, are suppressed outside of an effective lightcone whose radius grows at most polylogarithmically with |t|.

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Christian K. Burrell, Tobias J. Osborne. 2011-07-21. Bounds on Information Propagation in Disordered Quantum Spin Chains. https://doi.org/10.1103/physrevlett.99.167201

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