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  Transport in Stark many-body localized systems

Zisling, G., Kennes, D. M., & Lev, Y. B. (2022). Transport in Stark many-body localized systems. Physical Review B, 105(14): L140201. doi:10.1103/PhysRevB.105.L140201.

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PhysRevB.105.L140201.pdf (Publisher version), 694KB
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Supplemental Material: Provides calculations for additional parameters, and further check not presented in the main text, numerical checks of convergence and explanation of various numerical procedures.
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https://arxiv.org/abs/2109.06196 (Preprint)
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https://doi.org/10.1103/PhysRevB.105.L140201 (Publisher version)
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 Creators:
Zisling, G.1, Author
Kennes, D. M.2, 3, 4, Author              
Lev, Y. B.1, Author
Affiliations:
1Department of Physics, Ben-Gurion University of the Negev, ou_persistent22              
2Institute for Theory of Statistical Physics, RWTH Aachen University, and JARA Fundamentals of Future Information Technology, ou_persistent22              
3Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
4Center for Free-Electron Laser Science, ou_persistent22              

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 Abstract: Using numerically exact methods we study transport in an interacting spin chain which for sufficiently strong spatially constant electric field is expected to experience Stark many-body localization. We show that starting from a generic initial state, a spin excitation remains localized only up to a finite delocalization time, which depends exponentially on the size of the system and the strength of the electric field. This suggests that bona fide Stark many-body localization occurs only in the thermodynamic limit. We also demonstrate that the transient localization in a finite system and for electric fields stronger than the interaction strength can be well approximated by a Magnus expansion up to times which grow with the electric field strength.

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Language(s): eng - English
 Dates: 2021-09-242022-03-312022-04-112022-04-01
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 2109.06196
DOI: 10.1103/PhysRevB.105.L140201
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 105 (14) Sequence Number: L140201 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008