Bounds on Information Propagation in Disordered Quantum Spin Chains

Details Bounds on Information Propagation in Disordered Quantum Spin Chains Bounds on Information Propagation in Disordered Quantum Spin Chains

2007-03-22

arxiv.org/abs/quant-ph/0703209v3

Phys. Rev. Lett. 99, 167201 (2007)

Physics

Quantum Physics

4 pages, pdflatex, 1 pdf figure. Corrected the bound for the localised propagator and quantified the probability it bound occu

Scientific paper

10.1103/PhysRevLett.99.167201

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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