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Exceptional point information


In quantum physics, exceptional points[1] are singularities in the parameter space where two or more eigenstates (eigenvalues and eigenvectors) coalesce. These points appear in dissipative systems, which make the Hamiltonian describing the system non-Hermitian.

  1. ^ Bergholtz, Emil J.; Budich, Jan Carl; Kunst, Flore K. (2021-02-24). "Exceptional topology of non-Hermitian systems". Reviews of Modern Physics. 93 (1): 015005. arXiv:1912.10048. Bibcode:2021RvMP...93a5005B. doi:10.1103/RevModPhys.93.015005. S2CID 209444748.

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