Research profile

Non-Hermitian and PT-Symmetric Quantum Physics

非厄米哈密顿量、PT 对称、例外点、开放体系谱结构及其拓扑和量子几何。

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Questions this profile tracks

  • How do PT symmetry breaking and exceptional points reshape spectra, dynamics, and quantum geometry?
  • Which non-Hermitian topological phenomena survive in realistic open quantum systems?
  • How should biorthogonal observables and state geometry be defined and measured?

Recent matches

近期入选

Tomographic Characterization of Non-Hermitian Hamiltonians in Reciprocal Space

Francesco Di Colandrea, Fabrizio Pavan, Sarvesh Bansal, Paola Savarese, Grazia Di Bello, Giulio De Filippis, Carmine Antonio Perroni, Donato Farina, and Filippo Cardano

89 /100

The paper develops a programmable photonic method for tomographically characterizing non-Hermitian Hamiltonians in reciprocal space, directly matching experimental reconstruction of non-Hermitian spectra and topology.

Observation of flat-band skin effect

Xulong Wang, Dongyi Wang, Congwei Lu, Ruo-Yang Zhang, Ching Hua Lee, Kun Ding, and Guancong Ma, Xulong Wang, Dongyi Wang, Congwei Lu, Ruo-Yang Zhang, Ching Hua Lee, Kun Ding, Guancong Ma

90 /100

论文发现平带本身虽在复能量平面上拓扑平庸,仍可因包围它的色散带具有非平凡谱拓扑而出现非厄米平带皮肤效应,并在机械晶格中实现实验观测。

论文表明含Hamiltonian Duffing非线性的PT对称增益—损耗二聚体中,噪声会使线性PT未破缺区的轨道首次穿越逃逸至发散轨道,而在增益振子加入双光子损耗后,虽显式破坏精确PT对称却可形成真正吸引的双稳态长期动力学。

Tunable flat spectra based on Floquet exceptional points with linear quasienergy bands in frequency lattices

Yiling Song, Wenjing Lv, Lingzhi Zheng, Yibin Dong, Chao Hong, Mingfeng Wang, Shaolin Ke, Weiwei Liu, and Peixiang Lu

90 /100

论文在双耦合环形谐振器构成的周期淬火非厄米 SSH 频率晶格中,探索与 Floquet 例外点及线性准能带相关的可调平坦频谱。

Limitations of SVD-Based Diagnostics for Non-Hermitian Many-Body Localization with Time-Reversal Symmetry

Huimin You, Jinghu Liu, Yunbo Zhang, and Zhihao Xu, Huimin You, Jinghu Liu, Yunbo Zhang, Zhihao Xu

88 /100

直接研究时间反演对称非厄米多体系统中的局域化转变,并比较 SVD 辅助诊断与原始非厄米本征态、纠缠和谱统计方法的可靠性。

Lindbladian PT phase transitions

Yuma Nakanishi, Tomohiro Sasamoto

92 /100

该综述在非厄米系统、非线性动力学和 Markov 开放量子系统三种语境下界定 PT 对称性,并通过集体自旋与守粒子数双分部玻色系统的平均场理论说明 Lindbladian PT 对称性可在临界异常点附近导致持续周期动力学,同时讨论若干模型稳态的纯度与量子纠缠指标。

论文标题和摘要直接研究开放体系中的非厄米Bethe-Salpeter方程,并从第一性原理预测光子环境诱导的激子谱例外点,精准对应非厄米谱结构和开放量子体系主题。

论文标题和摘要直接研究开放体系中的非厄米Bethe-Salpeter方程,并从第一性原理预测光子环境诱导的激子谱例外点,精准对应非厄米谱结构和开放量子体系主题。