Non-local propagation of correlations in long-range interacting quantum systems

@article{Richerme2014NonlocalPO,
  title={Non-local propagation of correlations in long-range interacting quantum systems},
  author={Philip Richerme and Zhe-Xuan Gong and Aaron C. E. Lee and Crystal Senko and Jacob W. Smith and Michael Foss-Feig and Spyridon Michalakis and Alexey V. Gorshkov and Christopher R. Monroe},
  journal={Bulletin of the American Physical Society},
  year={2014}
}
The maximum speed with which information can propagate in a quantum many-body system directly affects how quickly disparate parts of the system can become correlated [1–4] and how difficult the system will be to describe numerically [5]. For systems with only short-range interactions, Lieb and Robinson derived a constant-velocity bound that limits correlations to within a linear effective light cone [6]. However, little is known about the propagation speed in systems with long-range… 
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