Monte Carlo based techniques for quantum magnets with long-range interactions

P Adelhardt, JA Koziol, A Langheld, KP Schmidt - Entropy, 2024 - mdpi.com
Long-range interactions are relevant for a large variety of quantum systems in quantum
optics and condensed matter physics. In particular, the control of quantum–optical platforms …

Bulk-boundary correspondence and singularity-filling in long-range free-fermion chains

NG Jones, R Thorngren, R Verresen - Physical Review Letters, 2023 - APS
The bulk-boundary correspondence relates topologically protected edge modes to bulk
topological invariants and is well understood for short-range free-fermion chains. Although …

Critical scaling of a two-orbital topological model with extended neighboring couplings

YR Kartik, RR Kumar, S Sarkar - Scientific Reports, 2024 - nature.com
Extended-range models are the interesting systems, which has been widely used to
understand the non-local properties of the fermions at quantum scale. We aim to study the …

Scaling at quantum phase transitions above the upper critical dimension

A Langheld, JA Koziol, P Adelhardt, S Kapfer… - SciPost Physics, 2022 - scipost.org
The hyperscaling relation and standard finite-size scaling (FSS) are known to break down
above the upper critical dimension due to dangerous irrelevant variables. We establish a …

Slow decay rate of correlations induced by long-range extended Dzyaloshinskii-Moriya interactions

TK Konar, LGC Lakkaraju, AS De - arxiv preprint arxiv:2407.21668, 2024 - arxiv.org
We examine the impact of long-range Dzyaloshinskii-Moriya (DM) interaction in the
extended XY model on the phase diagram as well as the static and dynamical properties of …

[การอ้างอิง][C] Quantum-critical properties of the one-dimensional long-range transverse-field Ising model extracted by quantum Monte Carlo simulations

A Langheld - 2021