361 citations · 992 across the 11 of their papers we have counts for
11 papers
A strange metal in a bosonic system
Chao Yang, Haiwen Liu, Yi Liu +10
Fermi liquid theory forms the basis for our understanding of the majority of metals, which is manifested in the description of transport properties that the electrical resistivity…
Quench dynamics of Hopf insulators
Haiping Hu, Chao Yang, Erhai Zhao
Hopf insulators are exotic topological states of matter outside the standard ten-fold way classification based on discrete symmetries. Its topology is captured by an integer invari…
Signature of nonequilibrium quantum phase transition in the long time average of Loschmidt echo
Bozhen Zhou, Chao Yang, Shu Chen
We unveil the role of the long time average of Loschmidt echo in the characterization of nonequilibrium quantum phase transitions by studying sudden quench processes across quantum…
Interplay of non-Hermitian skin effects and Anderson localization in non-reciprocal quasiperiodic lattices
Hui Jiang, Li-Jun Lang, Chao Yang +2
Non-Hermiticity from non-reciprocal hoppings has been shown recently to demonstrate the non-Hermitian skin effect (NHSE) under open boundary conditions (OBCs). Here we study the in…
Topological invariants and phase diagrams for one-dimensional two-band non-Hermitian systems without chiral symmetry
Hui Jiang, Chao Yang, Shu Chen
We study topological properties of one-dimensional non-Hermitian systems without chiral symmetry and give phase diagrams characterized by topological invariants and $ν_{total…
Observation of dynamical quantum phase transition by a superconducting qubit simulation
Xue-Yi Guo, Chao Yang, Yu Zeng +7
A dynamical quantum phase transition can occur during time evolution of sudden quenched quantum systems across a phase transition. It corresponds to the nonanalytic behavior at a c…
Dynamical topological invariant after a quantum quench
Chao Yang, Linhu Li, Shu Chen
We show how to define a dynamical topological invariant for general one-dimensional topological systems after a quantum quench. Focusing on two-band topological insulators, we demo…
Dynamical signature of localization-delocalization transition in one-dimensional incommensurate lattice
Chao Yang, Yucheng Wang, Pei Wang +2
We investigate the quench dynamics of a one-dimensional incommensurate lattice described by the Aubry-André model by a sudden change of the strength of incommensurate potential …
Topological invariants for phase transition points of one-dimensional topological systems
Linhu Li, Chao Yang, Shu Chen
We study topological properties of phase transition points of two topologically non-trivial classes (D and DIII) in one dimension by assigning a Berry phase defined…
Winding numbers of phase transition points for one-dimensional topological systems
Linhu Li, Chao Yang, Shu Chen
We study topological properties of phase transition points of one-dimensional topological quantum phase transitions by assigning winding numbers defined on closed circles around th…
Characterization of symmetry-protected topological phases in polymerized models by trajectories of Majorana stars
Chao Yang, Huaiming Guo, Li-Bin Fu +1
By using Majorana's stellar representation, we give a clear geometrical interpretation of the topological phases of inversion-symmetric polymerized models by mapping the Bloch stat…