33 citations · 139 across the 14 of their papers we have counts for
12 papers · 1 filter
Average-exact mixed anomalies and compatible phases
Yichen Xu, Chao-Ming Jian
The quantum anomaly of a global symmetry is known to strongly constrain the allowed low-energy physics in a clean and isolated quantum system. However, the effect of quantum anomal…
Deconfined Quantum Critical Point with Non-locality
Yichen Xu, Xiao-Chuan Wu, Cenke Xu
The deconfined quantum critical point (DQCP) between the Néel and valence bond solid (VBS) order was originally proposed in quantum spin systems with a local Hamiltonian. In the la…
A construction of exotic metallic states
Xiao-Chuan Wu, Yichen Xu, Mengxing Ye +2
We discuss examples of two dimensional metallic states with charge fractionalization, and we will demonstrate that the mechanism of charge fractionalization leads to exotic metalli…
Metal-Insulator Transition with Charge Fractionalization
Yichen Xu, Xiao-Chuan Wu, Mengxing Ye +3
It has been proposed that an extended version of the Hubbard model which potentially hosts rich correlated physics may be well simulated by the transition metal dichalcogenide (TMD…
Green's function Zero and Symmetric Mass Generation
Yichen Xu, Cenke Xu
It is known that, under short-range interactions many topological superconductors (TSC) and topological insulators (TI) are trivialized, which means the boundary state of the syste…
Physics of Symmetry Protected Topological phases involving Higher Symmetries and their Applications
Chao-Ming Jian, Xiao-Chuan Wu, Yichen Xu +1
We discuss physical constructions, and the boundary properties of various symmetry protected topological phases that involve 1-form symmetries, from one spatial dimension (1d) to f…
Continuous Néel-VBS Quantum Phase Transition in Non-Local one-dimensional systems with SO(3) Symmetry
Chao-Ming Jian, Yichen Xu, Xiao-Chuan Wu +1
One dimensional interacting systems with local Hamiltonians can be studied with various well-developed analytical methods. Recently novel physics was found numerically…
Topological Edge and Interface states at Bulk disorder-to-order Quantum Critical Points
Yichen Xu, Xiao-Chuan Wu, Chao-Ming Jian +1
We study the interplay between two nontrivial boundary effects: (1) the two dimensional () edge states of three dimensional () strongly interacting bosonic symmetry protect…
Boundary Criticality of Topological Quantum Phase Transitions in systems
Xiao-Chuan Wu, Yichen Xu, Hao Geng +2
We discuss the boundary critical behaviors of two dimensional quantum phase transitions with fractionalized degrees of freedom in the bulk, motivated by the fact that usually it is…
Non-Landau Quantum Phase Transitions and nearly-Marginal non-Fermi Liquid
Yichen Xu, Hao Geng, Xiao-Chuan Wu +2
Non-fermi liquid and unconventional quantum critical points (QCP) with strong fractionalization are two exceptional phenomena beyond the classic condensed matter doctrines, both of…
Orbital Orders and non-Fermi Liquid in Moiré systems
Yichen Xu, Xiao-Chuan Wu, Chao-Ming Jian +1
Motivated by recent observation of nematicity in Moiré systems, we study three different orbital orders that potentially can happen in Moiré systems: (1) the nematic order; (2) the…
Interacting Valley Chern Insulator and its Topological Imprint on Moiré Superconductors
Xiao-Chuan Wu, Yichen Xu, Chao-Ming Jian +1
One salient feature of systems with Moiré superlattice is that, Chern number of "minibands" originating from each valley of the original graphene Brillouin zone becomes a well-defi…