Asymmetric butterfly velocities in 2-local Hamiltonians

@article{Zhang2019AsymmetricBV,
title={Asymmetric butterfly velocities in 2-local Hamiltonians},
author={Yong-Liang Zhang and Vedika Khemani},
journal={arXiv: Statistical Mechanics},
year={2019}
}
• Published 2019
• Physics, Mathematics
• arXiv: Statistical Mechanics
The speed of information propagation is finite in quantum systems with local interactions. In many such systems, local operators spread ballistically in time and can be characterized by a "butterfly velocity", which can be measured via out-of-time-ordered correlation functions. In general, the butterfly velocity can depend asymmetrically on the direction of information propagation. In this work, we construct a family of simple 2-local Hamiltonians for understanding the asymmetric hydrodynamics… Expand
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