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Condensed Matter > Strongly Correlated Electrons

arXiv:2411.08394 (cond-mat)
[Submitted on 13 Nov 2024]

Title:Hidden quantum correlations in the ground states of quasiclassical spin systems

Authors:Levente Rózsa, Dennis Wuhrer, Sebastián A. Díaz, Ulrich Nowak, Wolfgang Belzig
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Abstract:Frustrated spin models may lead to the formation of both classical non-collinear 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 multi-site 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.
Comments: 13 pages, 7 figures
Subjects: Strongly Correlated Electrons (cond-mat.str-el); Other Condensed Matter (cond-mat.other)
Cite as: arXiv:2411.08394 [cond-mat.str-el]
  (or arXiv:2411.08394v1 [cond-mat.str-el] for this version)
  https://doi.org/10.48550/arXiv.2411.08394

Submission history

From: Levente Rózsa [view email]
[v1] Wed, 13 Nov 2024 07:27:10 UTC (1,343 KB)
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