2 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.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…