2 papers
cond-mat.quant-gas2026
Complexity transition in the Dicke model of light-matter interaction
Yicheng Zhang, Erhai Zhao
Tuning the coupling strength of an interacting quantum system may drive a sudden change in its ground-state or thermal properties. To identify and grasp non-analytical, or even…
cond-mat.quant-gas2026
Double-exchange ferromagnetism of fermionic atoms in a -orbital hexagonal lattice
Haoran Sun, Erhai Zhao, Youjin Deng +1
A large class of correlated quantum materials feature strong Hund's coupling. Yet cold-atom quantum simulators have so far focused primarily on single-orbital Fermi-Hubbard systems…