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arXiv 1108.0620quant-phmath-phmath.MP
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PT对称环形晶格中简并度的衰减

Decays of degeneracies in PT-symmetric ring-shaped lattices

Miloslav Znojil

摘要:

非厄米环形离散晶格与它们更流行的线性前身共享吸引力。它们的动力学由最近邻相互作用控制,这在现象学上同样有趣。相比之下,其拓扑结构的创新非平凡性可能会导致新的光谱效应。其中一些是通过可解的例子来研究的。主要注意的是在特殊点的扰动引起的光谱简并的去除。

英文摘要:

Non-Hermitian ring-shaped discrete lattices share the appeal with their more popular linear predecessors. Their dynamics controlled by the nearest-neighbor interaction is equally phenomenologically interesting. In comparison, the innovative nontriviality of their topology may be expected to lead to new spectral effects. Some of them are studied here via solvable examples. Main attention is paid to the perturbation-caused removals of spectral degeneracy at exceptional points.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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