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

ORAL

Abstract

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.

*This work was supported by the Simons Collaboration on the Many Electron Problem, the National Science Foundation under the grant DMR-1720465, and the MURI Program "New Quantum Phases of Matter" from AFOSR

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Presenters

  • Tao Wang

    • University of Massachusetts Amherst

Authors

  • Tao Wang

    • University of Massachusetts Amherst

  • Xiansheng Cai

    • University of Massachusetts Amherst

  • Kun Chen

    • Simons Foundation
    • Department of Physics and Astronomy, Rutgers, The State University of New Jersey
    • Flatiron Institute, Center for Computational Quantum Physics
    • Center for Computational Quantum Physics, Flatiron Institute

  • Nikolai Prokof'ev

    • University of Massachusetts Amherst

  • Boris Svistunov

    • University of Massachusetts Amherst