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 sub-percent level. We employ the bold dia...

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Bibliographic Details
Published in:arXiv.org 2019-10
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
Online Access:Get full text
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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 sub-percent 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 two-parametric models.
ISSN:2331-8422
DOI:10.48550/arxiv.1904.10081