Non-Hermitian Bethe-Salpeter Equation for Open Systems: Emergence of Exceptional Points in Excitonic Spectra from First Principles
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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。
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Author(s): Zhenlin Zhang, Wei Hu, Enrico Perfetto, and Gianluca Stefanucci Extension of the Bethe-Salpeter equation to open quantum systems predicts that engineered photonic environments induce exceptional points in the excitonic spectra of transition-metal dichalcogenides, providing a pathway for non-Hermitian quantum devices with controllable optical and valleytronic properties. [Phys. Rev. X 16, 031020] Published Tue Jul 28, 2026