5 papers
Fractionalized fermionic quantum criticality in spin-orbital Mott insulators
Urban F. P. Seifert, Xiao-Yu Dong, Sreejith Chulliparambil +3
We study transitions between topological phases featuring emergent fractionalized excitations in two-dimensional models for Mott insulators with spin and orbital degrees of freedom…
Quantum phase diagram and chiral spin liquid in the extended spin- honeycomb XY model
Yixuan Huang, Xiao-Yu Dong, D. N. Sheng +1
The frustrated XY model on the honeycomb lattice has drawn lots of attentions because of the potential emergence of chiral spin liquid (CSL) with the increasing of frustrations or…
Spin-1 Kitaev-Heisenberg model on a two-dimensional honeycomb lattice
Xiao-Yu Dong, D. N. Sheng
We study the Kitaev-Heisenberg model with spin-1 local degree of freedom on a two-dimensional honeycomb lattice numerically by density matrix renormalization group method. By tunin…
SU(3) trimer resonating-valence-bond state on the square lattice
Xiao-Yu Dong, Ji-Yao Chen, Hong-Hao Tu
We propose and study an SU(3) trimer resonating-valence-bond (tRVB) state with point-group symmetry on the square lattice. By devising a projected entangled-pair state rep…
Machine learning of quantum phase transitions
Xiao-Yu Dong, Frank Pollmann, Xue-Feng Zhang
Machine learning algorithms provide a new perspective on the study of physical phenomena. In this paper, we explore the nature of quantum phase transitions using multi-color convol…