Y Da Liao, H Li,
Z Yan, HT Wei, W Li, Y Qi… - arXiv preprint arXiv …, 2021 - arxiv.org
Quantum Ising model on a triangular lattice hosts a finite temperature Berezinskii-Kosterlitz-
Thouless (BKT) phase with emergent U (1) symmetry, and it will transit into an up-up-down …