Publikation:

Hidden quantum correlations in the ground states of quasiclassical spin systems

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2025

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URI (zitierfähiger Link)
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-mogbmmltcvks0
DOI (zitierfähiger Link)
https://doi.org/10.1103/physrevb.111.174441
ArXiv-ID
http://arxiv.org/abs/2411.08394

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Urheberrechtlich geschützt

Angaben zur Forschungsförderung

Deutsche Forschungsgemeinschaft (DFG): 425217212

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Open Access-Veröffentlichung
Open Access Green

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Physik: Publikationen
Core Facility der Universität Konstanz

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Published

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Physical Review B. American Physical Society (APS). 2025, 111(17), 174441. ISSN 2469-9950. eISSN 2469-9969. Verfügbar unter: doi: 10.1103/physrevb.111.174441

Zusammenfassung

Frustrated spin models may lead to the formation of both classical noncollinear spin structures and unique quantum phases including highly entangled quantum spin liquids. Here, we study the entanglement and spatial quantum correlations in linear spin-wave theory around a classical spin spiral ground state. We find that the entanglement between pairs of sites is short-ranged, and is completely absent in certain cases. In contrast, the entanglement hidden in multisite clusters is peaked close to phase transitions and shows an asymptotic behavior modulated by the period of the magnetic structure. These findings motivate further exploring the connection in the entanglement properties of fully quantum and of quasiclassical spin models.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

Frustrated magnetism, Magnons, Quantum entanglement, Triangular lattice, Linear spin wave theory

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ISO 690RÓZSA, Levente, Dennis WUHRER, Sebastian A. DIAZ, Ulrich NOWAK, Wolfgang BELZIG, 2025. Hidden quantum correlations in the ground states of quasiclassical spin systems. In: Physical Review B. American Physical Society (APS). 2025, 111(17), 174441. ISSN 2469-9950. eISSN 2469-9969. Verfügbar unter: doi: 10.1103/physrevb.111.174441
BibTex
@article{Rozsa2025-05-27Hidde-73485,
  title={Hidden quantum correlations in the ground states of quasiclassical spin systems},
  year={2025},
  doi={10.1103/physrevb.111.174441},
  number={17},
  volume={111},
  issn={2469-9950},
  journal={Physical Review B},
  author={Rózsa, Levente and Wuhrer, Dennis and Diaz, Sebastian A. and Nowak, Ulrich and Belzig, Wolfgang},
  note={Zusätzliche Förderung: Innovation Office (NRDI) of Hungary under Projects No. K131938 and No. FK142601, by the Ministry of Culture and Innovation and the National Research, Development and Innovation Office within the Quantum Information National Laboratory of Hungary (Grant No. 2022-2.1.1-NL-2022-00004), and by the Hungarian Academy of Sciences via a János Bolyai Research Grant (Grant No. BO/00178/23/11). Article Number: 174441}
}
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Zusätzliche Förderung: Innovation Office (NRDI) of Hungary under Projects No. K131938 and No. FK142601, by the Ministry of Culture and Innovation and the National Research, Development and Innovation Office within the Quantum Information National Laboratory of Hungary (Grant No. 2022-2.1.1-NL-2022-00004), and by the Hungarian Academy of Sciences via a János Bolyai Research Grant (Grant No. BO/00178/23/11).
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