2 papers
cond-mat.stat-mech2026
Long-Range Order in a Strictly Short-Range Quasi-2D XY Model: When Critical Fluctuations Matter
Minghui Hu, Chao Zhang, Dajun Zhang +3
The phase of spins in the quasi-two-dimensional (q2D) XY model has emerged as a topic of significant interest across multiple subfields of physics. Conventional wisdom, rooted in t…
cond-mat.quant-gas2025
Bose-Hubbard Model on a Honeycomb Superlattice: Quantum Phase Transitions and Lattice Effects
Wei-Wei Wang, Jin Yang, Jian-Ping Lv +1
We investigate the ground-state and finite-temperature phase diagrams of the Bose-Hubbard model on a honeycomb superlattice. The interplay between the superlattice potential depth…