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Reversible Quantum Information Spreading in Many-Body Systems near Criticality

URN to cite this document:
urn:nbn:de:bvb:355-epub-408706
Hummel, Quirin ; Geiger, Benjamin ; Urbina, Juan Diego ; Richter, Klaus

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Date of publication of this fulltext: 22 Oct 2019 13:12



Abstract

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. We consider ...

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