Special modes induced by inter-chain coupling in a non-Hermitian ladder system

• 作者: Hong-Fu Wang Lu Qi Rong Huang Shou Zhang Yu Yan Zhi-Xu Zhang
• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2020,（10）
• 所属期刊栏目: QUANTUM PHYSICS AND QUANTUM INFORMATION
• 页码范围: 53-69
• 页数: 17页
• 语种: 英文

摘要

We explore some interesting phenomena in a simple non-Hermitian ladder system.Special modes with energy eigenvalues closely related to the inter-chain-coupling strength appear in the non-Hermitian ladder system.We show that a phase transition occurs whereby special modes with pure real eigenvalues can switch to special modes with pure imaginary eigenvalues,when the inter-chain-coupling strength changes from symmetric to asymmetric.We find that the density profiles of all the special modes are completely identical under certain conditions,even if the inter-chain-coupling strength is added into the non-Hermitian ladder system in different ways.Moreover,we also demonstrate that the different inter-chain couplings are fundamentally equivalent to adding different on-site potential energies into the non-Hermitian ladder system.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Rong Huang		1	0	0.0	0.0
2	Yu Yan		1	0	0.0	0.0
3	Zhi-Xu Zhang		1	0	0.0	0.0
4	Lu Qi		1	0	0.0	0.0
5	Hong-Fu Wang		2	0	0.0	0.0
6	Shou Zhang		2	0	0.0	0.0