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Updated: Jun 6, 2025
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Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
Published on: July 29, 2013
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Phenomenology of Many-Body Localization in Bond-Disordered Spin Chains.
Adith Sai Aramthottil1,2, Piotr Sierant3, Maciej Lewenstein3,4
1Szkoła Doktorska Nauk Ścisłych i Przyrodniczych, <a href="https://ror.org/03bqmcz70">Uniwersytet Jagielloński</a>, Łojasiewicza 11, PL-30-348 Kraków, Poland.
Physical Review Letters
|November 22, 2024
Summary
Many-body localization (MBL) in disordered spin chains shows unique features like multimodal entanglement entropy. This research explores MBL beyond standard models, enabling experimental studies.
Area of Science:
- Quantum physics
- Condensed matter physics
- Disordered quantum systems
Background:
- Many-body localization (MBL) prevents thermalization in disordered quantum systems.
- Standard MBL theories often focus on on-site disorder.
- Understanding MBL in different disorder types is crucial.
Purpose of the Study:
- Investigate the MBL regime in a bond-disordered spin-1/2 XXZ spin chain.
- Identify unique characteristics of MBL beyond conventional models.
- Provide a framework for experimental verification.
Main Methods:
- Utilized a real-space renormalization group scheme.
- Analyzed eigenstates for entanglement entropy distribution.
- Examined level statistics and operator-state relationships.
Main Results:
- Observed multimodal distribution of entanglement entropy in eigenstates.
- Found sub-Poissonian level statistics characteristic of MBL.
- Established a link between operators and initial states for thermalization breakdown.
Conclusions:
- The study identifies key MBL signatures in bond-disordered systems.
- The findings extend the understanding of MBL beyond on-site disorder models.
- Results facilitate experimental exploration of MBL in novel spin chain systems.
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