540 citations · 4.7k across the 88 of their papers we have counts for
88 papers
Impurity screening by defects in (1+1) quantum critical systems
Ying-Hai Wu, Yueshui Zhang, Hong-Hao Tu +1
We propose a novel mechanism of impurity screening in (1+1) quantum critical states described by conformal field theories (CFTs). An impurity can be screened if it has the same…
Topological Phases with Average Symmetries: the Decohered, the Disordered, and the Intrinsic
Ruochen Ma, Jian-Hao Zhang, Zhen Bi +2
Global symmetries greatly enrich the landscape of topological quantum phases, playing an essential role from topological insulators to fractional quantum Hall effect. Topological p…
Gapped boundary of (4+1)d beyond-cohomology bosonic SPT phase
Xinping Yang, Meng Cheng
In this work we study gapped boundary states of bosonic symmetry-protected topological (SPT) phases in 4+1d, which are characterized by mixed -gravity…
Continuous phase transitions between fractional quantum Hall states and symmetry-protected topological states
Ying-Hai Wu, Hong-Hao Tu, Meng Cheng
We study quantum phase transitions in Bose-Fermi mixtures driven by interspecies interaction in the quantum Hall regime. In the absence of such an interaction, the bosons and fermi…
Chiral spin liquid in a Kitaev model
Li-Mei Chen, Tyler D. Ellison, Meng Cheng +2
We study a Kitaev model on the honeycomb lattice with nearest neighbor interactions. Based on matrix product state simulations and symmetry considerations, we find e…
Lieb-Schultz-Mattis, Luttinger, and 't Hooft -- anomaly matching in lattice systems
Meng Cheng, Nathan Seiberg
We analyze lattice Hamiltonian systems whose global symmetries have 't Hooft anomalies. As is common in the study of anomalies, they are probed by coupling the system to classical…