Algebraic Many-Body Localization and its implications on information propagation
Disordered Systems and Neural Networks
2019-02-11 v1
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.
Cite
@article{arxiv.1811.04941,
title = {Algebraic Many-Body Localization and its implications on information propagation},
author = {Giuseppe De Tomasi},
journal= {arXiv preprint arXiv:1811.04941},
year = {2019}
}