3 papers
cond-mat.stat-mech2024
Proof of nonintegrability of the spin- bilinear-biquadratic chain model
HaRu K. Park, SungBin Lee
Spin- chain models have been extensively studied in condensed matter physics, significantly advancing our understanding of quantum magnetism and low-dimensional systems, which e…
cond-mat.mes-hall2024
Controllable Skyrmion Islands in a Moiré Magnet
Jemin Park, HaRu K. Park, SungBin Lee
Antiferromagnetic(AFM) skyrmions have been in the spotlight as ideal topological magnetic bits. Although they are topologically protected, they do not exhibit the skyrmion Hall eff…
cond-mat.stat-mech2024
Graph theoretical proof of nonintegrability in quantum many-body systems : Application to the PXP model
HaRu K. Park, SungBin Lee
A rigorous proof of integrability or non-integrability in quantum many-body systems is among the most challenging tasks, as it involves demonstrating the presence or absence of loc…