山西大学学报（自然科学版）2018，Vol.41Issue(2)：362-367,6.DOI:10.13451/j.cnki.shanxi.univ(nat.sci.).2018.02.024
宇称-时间反演对称的Su-Schrieffer-Heeger模型的拓扑特性
Characterization of Topological Phase in Su-Schrieffer-Heeger Model with Parity-Time Reversal Symmetry
摘要
Abstract
Although the model with parity-time reversal (PT) symmetry is non-Hermition,the energy spectra of the system in some regions are all real,which is greatly fascinating.Especially,the topological properties of these systems have been hotspots.As the simplest topological insulator model,Su-Schrieffer-Heeger(SSH) model is added by the balance gain and loss chemical potential,which becomes the SSH model with PT symmetry.By studying the energy spectra of the system,the PT symmetry broken point can be found.It is found that topological properties of the system in unbroken region are similar to those of the system without non-Hermition chemical potential.关键词
拓扑绝缘体/宇称-时间反演对称/贝里相/非厄米量子力学Key words
topological insulator/parity-time reversal symmetry/Berry phase/non-Hermitian quantum mechanics分类
数理科学引用本文复制引用
刘棱,武晔虹..宇称-时间反演对称的Su-Schrieffer-Heeger模型的拓扑特性[J].山西大学学报（自然科学版）,2018,41(2):362-367,6.基金项目
山西医科大学博士启动基金项目(03201509) （03201509）
