4 papers
Anomalous Dynamical Scaling at Topological Quantum Criticality
Menghua Deng, Sheng Yang, Chen Sun +2
We study the nonequilibrium driven dynamics at topologically nontrivial quantum critical points (QCPs), and find that topological edge modes at criticality give rise to anomalous d…
Restoring Kibble-Zurek Scaling and Defect Freezing in Non-Hermitian Systems under Biorthogonal Framework
Menghua Deng, Wei Li, Kangyi Hu +1
Non-Hermitian physics provides an effective description of open and nonequilibrium systems and hosts many novel and intriguing phenomena such as exceptional points and non-Hermitia…
Kibble-Zurek Behavior in the Boundary-obstructed Phase Transitions
Menghua Deng, Zhoujian Sun, Fuxiang Li
We study the nonadiabatic dynamics of a two-dimensional higher-order topological insulator when the system is slowly quenched across the boundary-obstructed phase transition, which…
Universal scaling of quantum state transport in one-dimensional topological chain under nonadiabatic dynamics
Lingzi Huang, Menghua Deng, Chen Sun +1
When a system is driven across a continuous phase transition, the density of topological defects demonstrates a power-law scaling behavior versus the quenching rate, as predicted b…