AI 中文总结
该研究针对横场XY自旋链（Kitaev链），提出在无序线参数区探测马约拉纳模式，发现n≥2的多粒子马约拉纳模式可无衰减渗透入链体，其体边效应可在光学链晶格中检测。
AI 中文摘要
本研究提出，当系统参数被调整至退耦基态时，可探测其中的马约拉纳模式，这类状态出现在被称为无序线（disorder lines, DL）的参数曲线上。在该状态下，某些关联函数不依赖于间距。针对横场中的XY自旋链（在马约拉纳表象下也称为Kitaev链），研究给出了精确结果：单马约拉纳模式如无序线外的状态一样局域在链的两端，而退耦的n粒子马约拉纳模式（n≥2）则会无衰减地渗透入链体内。预测的体边效应可在特制的光学链与晶格中被探测到。
英文摘要
The proposal is to probe Majorana modes in the system when its parameters are tuned to bring it into a disentangled ground state, which occur on the parametric curves known as disorder lines (DL). In such state certain correlation functions do not depend on separation. The exact results are presented for the XY spin chain in transverse field, also called the Kitaev chain in the Majorana representation. The single Majorana modes are shown to be localized near the ends of the chain, as in the states off the DL, while the disentangled $n$-particle Majorana modes ($n \geq 2$) penetrate into the bulk without attenuation. The predicted bulk-edge effects can be detected in the specially engineered optical chains and lattices.
Comments6 pp. main text + 2 appendices
