Persistence of correlations in many-body localized spin chains

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Abstract

We study the evolution and persistence of quantum and classical correlations between spatially separated sites in the disordered XXZ spin chain in its ergodic and many-body-localized phases using exact diagonalization and matrix product state simulations. We show that in the many-body-localized phase, quantum entanglement survives in long-time unitary dynamics of the system, even though it is more fragile than the classical correlations. We study the dependence of the residual entanglement and correlations on the system size and on the disorder strength. Finally, we demonstrate the robustness of entanglement and correlations with respect to local dissipation in the bulk of the system.
Original languageEnglish
Article number043154
Pages (from-to)1-7
Number of pages7
JournalPHYSICAL REVIEW RESEARCH
Volume2
Issue number4
DOIs
Publication statusPublished - 29 Oct 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • many-body localization
  • spin chains
  • entanglement

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