物理学报2019，Vol.68Issue(4)：23-29,7.DOI:10.7498/aps.68.20181928
动力学淬火过程中的不动点及衍生拓扑现象
Fixed points and dynamic topological phenomena in quench dynamics
摘要
Abstract
In this review, we discuss the recent progress on the study of dynamic topological phenomena in quench dynamics. In particular, we focus on dynamic quantum phase transition and dynamic topological invariant, both of which are hinged upon the existence of fixed points in the dynamics. Further, the existence of these fixed points are topologically protected, in the sense that their existence are closely related to static topological invariants of pre- and post-quench Hamiltonians. We also discuss under what condition these dynamic topological phenomena are robust in non-unitary quench dynamics governed by non-Hermitian Hamiltonians. So far, dynamic topological phenomena have been experimentally observed in synthetic systems such as cold atomic gases, superconducting qubits, and linear optics. These studies extend our understanding of topological matter to the non-equilibrium regime.关键词
拓扑相/淬火动力学/动力学拓扑不变量/超冷原子Key words
topological phase/quench dynamics/dynamic topological invariant/ultracold atoms引用本文复制引用
邓天舒,易为..动力学淬火过程中的不动点及衍生拓扑现象[J].物理学报,2019,68(4):23-29,7.基金项目
国家自然科学基金(批准号: 15522545) 资助的课题. （批准号: 15522545）
