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Reversible quantum information spreading in many-body systems near criticality

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DOI to cite this document:
Hummel, Quirin ; Geiger, Benjamin ; Urbina, Juan Diego ; Richter, Klaus
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PDF - Submitted Version
arXiv PDF (21.12.2018)
Date of publication of this fulltext: 22 Jan 2019 13:01


Quantum chaotic interacting N-particle systems are assumed to show fast and irreversible spreading of quantum information on short (Ehrenfest) time scales ∼logN. Here we show that, near criticality, certain many-body systems exhibit fast initial scrambling, followed subsequently by oscillatory behavior between reentrant localization and delocalization of information in Hilbert space. ...


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