Quantum-to-classical correspondence in two-dimensional Heisenberg models

The quantum-to-classical correspondence (QCC) in spin models is a puzzling phenomenon where the static susceptibility of a quantum system agrees with its classical-system counterpart, at a different corresponding temperature, within the systematic error at a subpercent level. We employ the bold diag...

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Bibliographic Details
Published in:Physical review. B 2020-01, Vol.101 (3), p.1, Article 035132
Main Authors: Wang, Tao, Cai, Xiansheng, Chen, Kun, Prokof'ev, Nikolay V., Svistunov, Boris V.
Format: Article
Language:English
Subjects:
Computer simulation
Heisenberg theory
Monte Carlo simulation
Quantum theory
Statistical models
Systematic errors
Two dimensional models
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Summary:The quantum-to-classical correspondence (QCC) in spin models is a puzzling phenomenon where the static susceptibility of a quantum system agrees with its classical-system counterpart, at a different corresponding temperature, within the systematic error at a subpercent level. We employ the bold diagrammatic Monte Carlo method to explore the universality of QCC by considering three different two-dimensional spin-1/2 Heisenberg models. In particular, we reveal the existence of QCC in models with two parameters.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.101.035132