Detection of quantum phases via out-of-time-order correlators
Quantum Physics
2019-10-09 v3 Statistical Mechanics
Strongly Correlated Electrons
Abstract
We elucidate the relation between out-of-time-order correlators (OTOCs) and quantum phase transitions via analytically studying the OTOC dynamics in a degenerate spectrum. Our method points to key ingredients to dynamically detect quantum phases via out-of-time-order correlators for a wide range of quantum phase transitions and explains the existing numerical results in the literature. We apply our method to a critical model, XXZ model that numerically confirms our predictions.
Keywords
Cite
@article{arxiv.1902.05041,
title = {Detection of quantum phases via out-of-time-order correlators},
author = {Ceren B. Dağ and Kai Sun and L. -M. Duan},
journal= {arXiv preprint arXiv:1902.05041},
year = {2019}
}
Comments
Presentation improved