Mechanisms for the emergence of Gaussian correlations

@article{Gluza2022MechanismsFT,
  title={Mechanisms for the emergence of Gaussian correlations},
  author={Marek Gluza and Thomas Schweigler and Mohammadamin Tajik and Jo{\~a}o Sabino and Federica Cataldini and Frederik M{\o}ller and S. Ji and Bernhard Rauer and J{\"o}rg Schmiedmayer and Jens Eisert and Spyros Sotiriadis},
  journal={SciPost Physics},
  year={2022}
}
We comprehensively investigate two distinct mechanisms leading to memory loss of non-Gaussian correlations after switching off the interactions in an isolated quantum system undergoing out-of-equilibrium dynamics. The first mechanism is based on spatial scrambling and results in the emergence of locally Gaussian steady states in large systems evolving over long times. The second mechanism, characterized as `canonical transmutation', is based on the mixing of a pair of canonically conjugate… 
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