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Bounds on the Speed of Information Propagation in Disordered Quantum Spin Chains

Christian K. Burrell and Tobias J. Osborne
Phys. Rev. Lett. 99, 167201 – Published 16 October 2007

Abstract

We investigate the propagation of information through the disordered XY model. We find that all correlations, both classical and quantum, are exponentially suppressed outside of an effective light cone whose radius grows at most logarithmically with |t|.

  • Figure
  • Figure
  • Received 4 May 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.167201

©2007 American Physical Society

Authors & Affiliations

Christian K. Burrell and Tobias J. Osborne

  • Department of Mathematics, Royal Holloway University of London, Egham, Surrey, TW20 0EX, United Kingdom

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Issue

Vol. 99, Iss. 16 — 19 October 2007

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