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arXiv · 1811.04941

Algebraic Many-Body Localization and its implications on information propagation

Giuseppe De Tomasi
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Abstract

We probe the existence of a many-body localized phase (MBL-phase) in a spinless fermionic Hubbard chain with algebraically localized single-particle states, by investigating both static and dynamical properties of the system. This MBL-phase can be characterized by an extensive number of integrals of motion which develop algebraically decaying tails, unlike the case of exponentially localized single-particle states. We focus on the implications for the quantum information propagation through the system. We provide evidence that the bipartite entanglement entropy after a quantum quench has an unbounded algebraic growth in time, while the quantum Fisher information grows logarithmically.

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Giuseppe De Tomasi. 2018-11-12. Algebraic Many-Body Localization and its implications on information propagation. https://doi.org/10.1103/physrevb.99.054204

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