Entanglement-enhanced spreading of correlations
Date
2015-12-17
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Abstract
Starting from a product initial state, equal-time correlations in nonrelativistic quantum lattice models
propagate within a light cone-like causal region. The presence of entanglement in the initial state can
modify this behaviour, enhancing and accelerating the growth of correlations. In this paper we give a
quantitative description, in the form of Lieb-Robinson-type bounds on equal-time correlation
functions, of the interplay of dynamics versus. initial entanglement in quantum lattice models out of
equilibrium. The bounds are tested against model calculations, and applications to quantum
quenches, quantum channels, and Kondo physics are discussed.
Description
CITATION: Kastner, M. 2015. Entanglement-enhanced spreading of correlations. New Journal of Physics, 17:123024, doi:10.1088/1367-2630/17/12/123024.
The original publication is available at http://iopscience.iop.org/journal/1367-2630
The original publication is available at http://iopscience.iop.org/journal/1367-2630
Keywords
Quantum entanglement, Correlation (Statistics), Lattice theory, Nonrelativistic quantum theory, Lieb-Robinson bounds
Citation
Kastner, M. 2015. Entanglement-enhanced spreading of correlations. New Journal of Physics, 17:123024, doi:10.1088/1367-2630/17/12/123024.