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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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Item Permalink: https://hdl.handle.net/21.11116/0000-0009-29B9-9 Version Permalink: https://hdl.handle.net/21.11116/0000-000B-F575-D
Genre: Journal Article

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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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 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: Issued
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 Rev. Type: Peer
 Identifiers: arXiv: 2109.06196
DOI: 10.1103/PhysRevB.105.L140201
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Project name : We would like to thank Achilleas Lazarides for insightful discussions and constructive comments on the manuscript, and Tomotaka Kuwahara for providing technical details on the calculation of high Magnus orders in Ref. [73]. This research was supported by a grant from the United States–Israel Binational Foundation (BSF; Grant No. 2019644), Jerusalem, Israel, and by the Israel Science Foundation (Grants No. 527/19 and No. 218/19).
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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