Universal dephasing mechanism of many-body quantum chaos

@article{Liao2022UniversalDM,
  title={Universal dephasing mechanism of many-body quantum chaos},
  author={Yunxiang Liao and Victor Galitski},
  journal={Physical Review Research},
  year={2022}
}
Ergodicity is a fundamental principle of statistical mechanics underlying the behavior of generic quantum many-body systems. However, how this universal many-body quantum chaotic regime emerges due to interactions remains largely a puzzle. This paper demonstrates using both heuristic arguments and a microscopic calculation that a dephasing mechanism, similar to Altshuler-Aronov-Khmelnitskii dephasing in the theory of localization, underlies this transition to chaos. We focus on the behavior of… 

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