N-channel parity-time symmetry

IF 1.8 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

EPL Pub Date : 2023-11-09 DOI:10.1209/0295-5075/ad0b55

Ege Özgün

引用次数: 0

Abstract

Abstract We calculated the eigenvalues for a general N-channel coupled system with parity-time symmetry due to equal loss/gain. We found that the eigenspectrum displays a mixing of parity-time symmetric and broken phases, with N −2 of the eigenvalues being parity-time broken whereas the remaining two being either parity-time symmetric or broken depending on the loss/gain and coupling parameters. Our results also show that mixing of parity-time symmetric and parity-time broken phases can only be obtained for at least four-channels if other degrees of freedom such as polarization or spin are not taken into account.

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n通道奇偶时间对称

摘要本文计算了一类具有奇偶时间对称性的n通道耦合系统的本征值。我们发现本征谱显示了奇偶时间对称和破缺相位的混合，其中N−2的本征值是奇偶时间破缺的，而剩下的两个本征值是奇偶时间对称的或破缺的，这取决于损耗/增益和耦合参数。我们的结果还表明，如果不考虑极化或自旋等其他自由度，则至少在四个通道中才能获得奇偶时间对称相和奇偶时间破缺相的混合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

EPL 物理-物理：综合

CiteScore

3.30

自引率

5.60%

发文量

332

审稿时长

1.9 months

期刊介绍： General physics – physics of elementary particles and fields – nuclear physics – atomic, molecular and optical physics – classical areas of phenomenology – physics of gases, plasmas and electrical discharges – condensed matter – cross-disciplinary physics and related areas of science and technology. Letters submitted to EPL should contain new results, ideas, concepts, experimental methods, theoretical treatments, including those with application potential and be of broad interest and importance to one or several sections of the physics community. The presentation should satisfy the specialist, yet remain understandable to the researchers in other fields through a suitable, clearly written introduction and conclusion (if appropriate). EPL also publishes Comments on Letters previously published in the Journal.

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