Operator growth in disordered spin chains: Indications for the absence of many-body localization

We consider the spreading of a local operator A in one-dimensional many-body systems with Hamiltonian H by calculating the k-fold commutator [H,[H,[...,[H,A]]]]. We derive bounds for the operator norm of this commutator in free and interacting systems with and without disorder thus directly connecti...

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Bibliographic Details
Main Authors: A. Weisse, R. Gerstner, J. Sirker
Format: Article
Language:English
Published: American Physical Society 2025-07-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/wgss-nt8t
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