Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 26: Poster V
A 26.11: Poster
Wednesday, March 13, 2024, 17:00–19:00, Tent C
Quantum Monte Carlo simulations of hardcorde bosons with repulsive dipolar density-density interactions on two-dimensional lattices — •Robin Rüdiger Krill1, 2, Jan Alexander Koziol2, Calvin Krämer2, Anja Langheld2, Giovanna Morigi1, and Kai Phillip Schmidt2 — 1Theoretical Physics, Universität des Saarlandes, 66123 Saarbrücken, Germany — 2Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, Germany
We apply stochastic series expansion quantum Monte Carlo simulations to determine ground-state properties of frustrated long-range hardcore Bose-Hubbard lattice models in two dimensions. Recent investigations of such systems with mean-field approaches indicate rich quantum phase diagrams including a devil’s staircase of solid phases and a plethora of exotic lattice supersolids [1,2]. The quantum Monte-Carlo approach allows us to extend this mean-field study by fully incorporating quantum fluctuations, and thus to analyse the interplay among frustration, long-range interactions, and quantum fluctuations. [1] J.A Koziol, A.Duft, G.Morigi, K.P. Schmidt, SciPost Phys. 14, 136 (2023)
[2] J.A Koziol, G.Morigi, K.P. Schmidt, arXiv:2311.10632 (2023)
Keywords: lattice model; Bose-Hubbard model; quantum Monte Carlo; stochastic series expansion; long-range interactions