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arxiv: quant-ph/0703209 · v3 · pith:WLWXRNRMnew · submitted 2007-03-22 · 🪐 quant-ph

Bounds on Information Propagation in Disordered Quantum Spin Chains

classification 🪐 quant-ph
keywords disorderedinformationpropagationquantumboundschainsclassicalcorrelations
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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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