Nonequilibrium characterization of equilibrium correlated quantum phases

Zhang，Long1,2; Zhang，Lin1,2; Hu，Ying3,4; Niu，Sen1,2; Liu，Xiong Jun1,2,5

2021-06-01

10.1103/PhysRevB.103.224308

Physical Review B   影响因子和分区

2469-9950

2469-9969

Quenching a quantum system involves three basic ingredients: the initial phase, the postquench target phase, and quantum dynamics, which may carry the information of the former two. Here we propose a dynamical theory, based on an interaction quench, to characterize both the equilibrium symmetry-breaking order and topological phases by nonequilibrium correlated quantum dynamics. We illustrate the theory with the Haldane-Hubbard model, which is quenched from an initial correlated magnetic phase to a topologically nontrivial regime. We show that the quench dynamics exhibit profound universal behaviors on the so-called band-inversion surfaces (BISs), from which both the topological phase in the weakly interacting regime and the correlated magnetic phase in the strongly interacting regime can be extracted. In particular, the topology is characterized by dynamical topological patterns emerging on BISs, which are robust against interaction-induced dephasing and heating; the symmetry-breaking order can be read out from a universal dynamical scaling behavior, which is valid beyond the mean-field theory. This work uncovers the first paradigm of nonequilibrium characterization of equilibrium symmetry-breaking and topological phases.

SCI ; EI

英语

其他

WOS:000664434600006

PHYSICS

2-s2.0-85109048544

Scopus

1.International Center for Quantum Materials,School of Physics,Peking University,Beijing,100871,China
2.Collaborative Innovation Center of Quantum Matter,Beijing,100871,China
3.State Key Laboratory of Quantum Optics,Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Shanxi,030006,China
4.Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan,030006,China
5.Institute for Quantum Science and Engineering,Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China

Zhang，Long,Zhang，Lin,Hu，Ying,et al. Nonequilibrium characterization of equilibrium correlated quantum phases[J]. Physical Review B,2021,103(22).

Zhang，Long,Zhang，Lin,Hu，Ying,Niu，Sen,&Liu，Xiong Jun.(2021).Nonequilibrium characterization of equilibrium correlated quantum phases.Physical Review B,103(22).

Zhang，Long,et al."Nonequilibrium characterization of equilibrium correlated quantum phases".Physical Review B 103.22(2021).