Dresden 2026 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 23: Correlated Electrons – Poster I

TT 23.7: Poster

Montag, 9. März 2026, 18:00–20:00, P1

Stochastic series expansion quantum Monte Carlo for quantum lattice models beyond spin 1/2 — •Melanie A. R. Wolf, Anja Langheld, Calvin Krämer, Jan Alexander Koziol, and Kai Phillip Schmidt — Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtdtr. 7, 91058 Erlangen, Germany

Stochastic series expansion quantum Monte Carlo is a well established method for the quantitative investigation of quantum spin models with spin 1/2. Especially, the sampling of quantum Ising models with arbitrary interactions [1] without a sign problem, constitutes an important milestone in the development of the method. Therefore, it follows naturally to ask how to transfer this efficient sampling scheme to quantum systems with a larger local Hilbert space like spin-one or quantum Potts models. In our work we implement the stochastic series expansion quantum Monte Carlo scheme [2] and explore the quantum and thermal properties of quantum Potts models.
[1] A. Sandvik, Phys. Rev. E 68, 056701
[2] C. Ding et al., arXiv:1702.02675

Keywords: Stochastic series expansion; quantum Monte Carlo; quantum spin models; quantum Potts models